Tetrahydro- and dihydro-isoquinoline prmt5 inhibitors and uses thereof

ABSTRACT

Described herein are compounds of Formula (A), pharmaceutically acceptable salts thereof, and pharmaceutical compositions thereof. Compounds of the present invention are useful for inhibiting PRMT5 activity. Methods of using the compounds for treating PRMT5-mediated disorders are also described.

RELATED APPLICATIONS

The present application is a continuation and claims priority under 35 U.S.C. § 120 to U.S. Ser. No. 15/419,260, filed Jan. 30, 2017 (allowed), which is a continuation of and claims priority under 35 U.S.C. § 120 to U.S. Ser. No. 14/654,253, filed Jun. 19, 2015, now U.S. Pat. No. 9,604,930, which is a national stage filing under 35 U.S.C. § 371 of international PCT application PCT/US2013/077235, filed Dec. 20, 2013, which claims priority under 35 U.S.C. § 119(e) to U.S. provisional patent applications, U.S. Ser. No. 61/745,485, filed Dec. 21, 2012, and U.S. Ser. No. 61/790,525, filed Mar. 15, 2013, the entire contents of each of which are incorporated herein by reference.

BACKGROUND OF THE INVENTION

Epigenetic regulation of gene expression is an important biological determinant of protein production and cellular differentiation and plays a significant pathogenic role in a number of human diseases.

Epigenetic regulation involves heritable modification of genetic material without changing its nucleotide sequence. Typically, epigenetic regulation is mediated by selective and reversible modification (e.g., methylation) of DNA and proteins (e.g., histones) that control the conformational transition between transcriptionally active and inactive states of chromatin. These covalent modifications can be controlled by enzymes such as methyltransferases (e.g., PRMT5), many of which are associated with specific genetic alterations that can cause human disease.

Disease-associated chromatin-modifying enzymes (e.g., PRMT5) play a role in diseases such as proliferative disorders, metabolic disorders, and blood disorders. Thus, there is a need for the development of small molecules that are capable of inhibiting the activity of PRMT5.

DETAILED DESCRIPTION OF CERTAIN EMBODIMENTS

Protein arginine methyltransferase 5 (PRMT5) catalyzes the addition of two methyl groups to the two ω-guanidino nitrogen atoms of arginine, resulting in ω-NG, N′G symmetric dimethylation of arginine (sDMA) of the target protein. PRMT5 functions in the nucleus as well as in the cytoplasm, and its substrates include histones, spliceosomal proteins, transcription factors (See e.g., Sun et al., PNAS (2011), 108: 20538-20543). PRMT5 generally functions as part of a molecule weight protein complex. While the protein complexes of PRMT5 can have a variety of components, they generally include the protein MEP50 (methylosome protein 50). In addition, PRMT5 acts in conjunction with cofactor SAM (S-adenosyl methionine).

PRMT5 is an attractive target for modulation given its role in the regulation of diverse biological processes. It has now been found that compounds described herein, and pharmaceutically acceptable salts and compositions thereof, are effective as inhibitors of PRMT5.

Such compounds have the general Formula (A):

or a pharmaceutically acceptable salt thereof, wherein R¹, R⁵, R⁶, R⁷, R⁸, R^(x), R¹², R¹³, n, L, and Ar are as defined herein.

In some embodiments, the inhibitors of PRMT5 have the general Formula (I):

or a pharmaceutically acceptable salt thereof, wherein R¹, R⁵, R⁶, R⁷, R⁸, R^(x), n, L, and Ar are as defined herein.

In some embodiments, pharmaceutical compositions are provided which comprise a compound described herein (e.g, a compound of Formula (A), e.g., Formula (I)), or a pharmaceutically acceptable salt thereof, and optionally a pharmaceutically acceptable excipient.

In certain embodiments, compounds described herein inhibit activity of PRMT5. In certain embodiments, methods of inhibiting PRMT5 are provided which comprise contacting PRMT5 with an effective amount of a compound of Formula (A), e.g., Formula (I), or a pharmaceutically acceptable salt thereof. The PRMT5 may be purified or crude, and may be present in a cell, tissue, or a subject. Thus, such methods encompass inhibition of PRMT5 activity both in vitro and in vivo. In certain embodiments, the PRMT5 is wild-type PRMT5. In certain embodiments, the PRMT5 is overexpressed. In certain embodiments, the PRMT5 is a mutant. In certain embodiments, the PRMT5 is in a cell. In certain embodiments, the PRMT5 is in an animal, e.g., a human. In some embodiments, the PRMT5 is in a subject that is susceptible to normal levels of PRMT5 activity due to one or more mutations associated with a PRMT5 substrate. In some embodiments, the PRMT5 is in a subject known or identified as having abnormal PRMT5 activity (e.g., overexpression). In some embodiments, a provided compound is selective for PRMT5 over other methyltransferases. In certain embodiments, a provided compound is at least about 10-fold selective, at least about 20-fold selective, at least about 30-fold selective, at least about 40-fold selective, at least about 50-fold selective, at least about 60-fold selective, at least about 70-fold selective, at least about 80-fold selective, at least about 90-fold selective, or at least about 100-fold selective relative to one or more other methyltransferases.

In certain embodiments, methods of altering gene expression in a cell are provided which comprise contacting a cell with an effective amount of a compound of Formula (A), e.g., Formula (I), or a pharmaceutically acceptable salt thereof, or a pharmaceutical composition thereof. In certain embodiments, the cell in culture in vitro. In certain embodiments, cell is in an animal, e.g., a human.

In certain embodiments, methods of altering transcription in a cell are provided which comprise contacting a cell with an effective amount of a compound of Formula (A), e.g., Formula (I), or a pharmaceutically acceptable salt thereof, or a pharmaceutical composition thereof. In certain embodiments, the cell in culture in vitro. In certain embodiments, the cell is in an animal, e.g., a human.

In some embodiments, methods of treating a PRMT5-mediated disorder are provided which comprise administering to a subject suffering from a PRMT5-mediated disorder an effective amount of a compound described herein (e.g., a compound of Formula (A), e.g., Formula (I)), or a pharmaceutically acceptable salt thereof, or a pharmaceutical composition thereof. In certain embodiments, the PRMT5-mediated disorder is a proliferative disorder, a metabolic disorder, or a blood disorder. In certain embodiments, compounds described herein are useful for treating cancer. In certain embodiments, compounds described herein are useful for treating hematopoietic cancer, lung cancer, prostate cancer, melanoma, or pancreatic cancer. In certain embodiments, compounds described herein are useful for treating a hemoglobinopathy. In certain embodiments, compounds described herein are useful for treating sickle cell anemia. In certain embodiments, compounds described herein are useful for treating diabetes or obesity. In certain embodiments, a provided compound is useful in treating inflammatory and autoimmune disease.

Compounds described herein are also useful for the study of PRMT5 in biological and pathological phenomena, the study of intracellular signal transduction pathways mediated by PRMT5, and the comparative evaluation of new PRMT5 inhibitors.

This application refers to various issued patent, published patent applications, journal articles, and other publications, all of which are incorporated herein by reference.

Definitions of specific functional groups and chemical terms are described in more detail below. The chemical elements are identified in accordance with the Periodic Table of the Elements, CAS version, Handbook of Chemistry and Physics, 75^(th) Ed., inside cover, and specific functional groups are generally defined as described therein. Additionally, general principles of organic chemistry, as well as specific functional moieties and reactivity, are described in Thomas Sorrell, Organic Chemistry, University Science Books, Sausalito, 1999; Smith and March, March's Advanced Organic Chemistry, 5^(th) Edition, John Wiley & Sons, Inc., New York, 2001; Larock, Comprehensive Organic Transformations, VCH Publishers, Inc., New York, 1989; and Carruthers, Some Modern Methods of Organic Synthesis, 3^(rd) Edition, Cambridge University Press, Cambridge, 1987.

Compounds described herein can comprise one or more asymmetric centers, and thus can exist in various isomeric forms, e.g., enantiomers and/or diastereomers. For example, the compounds described herein can be in the form of an individual enantiomer, diastereomer or geometric isomer, or can be in the form of a mixture of stereoisomers, including racemic mixtures and mixtures enriched in one or more stereoisomer. Isomers can be isolated from mixtures by methods known to those skilled in the art, including chiral high pressure liquid chromatography (HPLC) and the formation and crystallization of chiral salts; or preferred isomers can be prepared by asymmetric syntheses. See, for example, Jacques et al., Enantiomers, Racemates and Resolutions (Wiley Interscience, New York, 1981); Wilen et al., Tetrahedron 33:2725 (1977); Eliel, Stereochemistry of Carbon Compounds (McGraw-Hill, N Y, 1962); and Wilen, Tables of Resolving Agents and Optical Resolutions p. 268 (E. L. Eliel, Ed., Univ. of Notre Dame Press, Notre Dame, Ind. 1972). The present disclosure additionally encompasses compounds described herein as individual isomers substantially free of other isomers, and alternatively, as mixtures of various isomers.

It is to be understood that the compounds of the present invention may be depicted as different tautomers. It should also be understood that when compounds have tautomeric forms, all tautomeric forms are intended to be included in the scope of the present invention, and the naming of any compound described herein does not exclude any tautomer form.

Unless otherwise stated, structures depicted herein are also meant to include compounds that differ only in the presence of one or more isotopically enriched atoms. For example, compounds having the present structures except for the replacement of hydrogen by deuterium or tritium, replacement of ¹⁹F with ¹⁸F, or the replacement of a carbon by a ¹³C- or ¹⁴C-enriched carbon are within the scope of the disclosure. Such compounds are useful, for example, as analytical tools or probes in biological assays.

The term “aliphatic,” as used herein, includes both saturated and unsaturated, nonaromatic, straight chain (i.e., unbranched), branched, acyclic, and cyclic (i.e., carbocyclic) hydrocarbons. In some embodiments, an aliphatic group is optionally substituted with one or more functional groups. As will be appreciated by one of ordinary skill in the art, “aliphatic” is intended herein to include alkyl, alkenyl, alkynyl, cycloalkyl, and cycloalkenyl moieties.

When a range of values is listed, it is intended to encompass each value and sub-range within the range. For example “C₁₋₆ alkyl” is intended to encompass, C₁, C₂, C₃, C₄, C₅, C₆, C₁₋₆, C₁₋₅, C₁₋₄, C₁₋₃, C₁₋₂, C₂₋₆, C₂₋₅, C₂₋₄, C₂₋₃, C₃₋₆, C₃₋₅, C₃₋₄, C₄₋₆, C₄₋₅, and C₅₋₆ alkyl.

“Alkyl” refers to a radical of a straight-chain or branched saturated hydrocarbon group having from 1 to 20 carbon atoms (“C₁₋₂₀ alkyl”). In some embodiments, an alkyl group has 1 to 10 carbon atoms (“C₁₋₁₀ alkyl”). In some embodiments, an alkyl group has 1 to 9 carbon atoms (“C₁₋₉ alkyl”). In some embodiments, an alkyl group has 1 to 8 carbon atoms (“C₁₋₈ alkyl”). In some embodiments, an alkyl group has 1 to 7 carbon atoms (“C₁₋₇ alkyl”). In some embodiments, an alkyl group has 1 to 6 carbon atoms (“C₁₋₆ alkyl”). In some embodiments, an alkyl group has 1 to 5 carbon atoms (“C₁₋₅ alkyl”). In some embodiments, an alkyl group has 1 to 4 carbon atoms (“C₁₋₄ alkyl”). In some embodiments, an alkyl group has 1 to 3 carbon atoms (“C₁₋₃ alkyl”). In some embodiments, an alkyl group has 1 to 2 carbon atoms (“C₁₋₂ alkyl”). In some embodiments, an alkyl group has 1 carbon atom (“C₁ alkyl”). In some embodiments, an alkyl group has 2 to 6 carbon atoms (“C₂₋₆ alkyl”). Examples of C₁₋₆ alkyl groups include methyl (C₁), ethyl (C₂), n-propyl (C₃), isopropyl (C₃), n-butyl (C₄), tert-butyl (C₄), sec-butyl (C₄), iso-butyl (C₄), n-pentyl (C₅), 3-pentanyl (C₅), amyl (C₅), neopentyl (C₅), 3-methyl-2-butanyl (C₅), tertiary amyl (C₅), and n-hexyl (C₆). Additional examples of alkyl groups include n-heptyl (C₇), n-octyl (C₈) and the like. In certain embodiments, each instance of an alkyl group is independently optionally substituted, e.g., unsubstituted (an “unsubstituted alkyl”) or substituted (a “substituted alkyl”) with one or more substituents. In certain embodiments, the alkyl group is unsubstituted C₁₋₁₀ alkyl (e.g., —CH₃). In certain embodiments, the alkyl group is substituted C₁₋₁₀ alkyl.

In some embodiments, an alkyl group is substituted with one or more halogens. “Perhaloalkyl” is a substituted alkyl group as defined herein wherein all of the hydrogen atoms are independently replaced by a halogen, e.g, fluoro, bromo, chloro, or iodo. In some embodiments, the alkyl moiety has 1 to 8 carbon atoms (“C₁₋₈ perhaloalkyl”). In some embodiments, the alkyl moiety has 1 to 6 carbon atoms (“C₁₋₆ perhaloalkyl”). In some embodiments, the alkyl moiety has 1 to 4 carbon atoms (“C₁₋₄ perhaloalkyl”). In some embodiments, the alkyl moiety has 1 to 3 carbon atoms (“C₁₋₃ perhaloalkyl”). In some embodiments, the alkyl moiety has 1 to 2 carbon atoms (“C₁₋₂ perhaloalkyl”). In some embodiments, all of the hydrogen atoms are replaced with fluoro. In some embodiments, all of the hydrogen atoms are replaced with chloro. Examples of perhaloalkyl groups include —CF₃, —CF₂CF₃, —CF₂CF₂CF₃, —CCl₃, —CFCl₂, —CF₂Cl, and the like.

“Alkenyl” refers to a radical of a straight-chain or branched hydrocarbon group having from 2 to 20 carbon atoms, one or more carbon-carbon double bonds, and no triple bonds (“C₂₋₂₀ alkenyl”). In some embodiments, an alkenyl group has 2 to 10 carbon atoms (“C₂₋₁₀ alkenyl”). In some embodiments, an alkenyl group has 2 to 9 carbon atoms (“C₂₋g alkenyl”). In some embodiments, an alkenyl group has 2 to 8 carbon atoms (“C₂₋₈ alkenyl”). In some embodiments, an alkenyl group has 2 to 7 carbon atoms (“C₂₋₇ alkenyl”). In some embodiments, an alkenyl group has 2 to 6 carbon atoms (“C₂₋₆ alkenyl”). In some embodiments, an alkenyl group has 2 to 5 carbon atoms (“C₂₋₅ alkenyl”). In some embodiments, an alkenyl group has 2 to 4 carbon atoms (“C₂₋₄ alkenyl”). In some embodiments, an alkenyl group has 2 to 3 carbon atoms (“C₂₋₃ alkenyl”). In some embodiments, an alkenyl group has 2 carbon atoms (“C₂ alkenyl”). The one or more carbon-carbon double bonds can be internal (such as in 2-butenyl) or terminal (such as in 1-butenyl). Examples of C₂₋₄ alkenyl groups include ethenyl (C₂), 1-propenyl (C₃), 2-propenyl (C₃), 1-butenyl (C₄), 2-butenyl (C₄), butadienyl (C₄), and the like. Examples of C₂₋₆ alkenyl groups include the aforementioned C₂₋₄ alkenyl groups as well as pentenyl (C₅), pentadienyl (C₅), hexenyl (C₆), and the like. Additional examples of alkenyl include heptenyl (C₇), octenyl (C₈), octatrienyl (C₈), and the like. In certain embodiments, each instance of an alkenyl group is independently optionally substituted, e.g., unsubstituted (an “unsubstituted alkenyl”) or substituted (a “substituted alkenyl”) with one or more substituents. In certain embodiments, the alkenyl group is unsubstituted C₂₋₁₀ alkenyl. In certain embodiments, the alkenyl group is substituted C₂₋₁₀ alkenyl.

“Alkynyl” refers to a radical of a straight-chain or branched hydrocarbon group having from 2 to 20 carbon atoms, one or more carbon-carbon triple bonds, and optionally one or more double bonds (“C₂₋₂₀ alkynyl”). In some embodiments, an alkynyl group has 2 to 10 carbon atoms (“C₂₋₁₀ alkynyl”). In some embodiments, an alkynyl group has 2 to 9 carbon atoms (“C₂₋₉ alkynyl”). In some embodiments, an alkynyl group has 2 to 8 carbon atoms (“C₂₋₈ alkynyl”). In some embodiments, an alkynyl group has 2 to 7 carbon atoms (“C₂₋₇ alkynyl”). In some embodiments, an alkynyl group has 2 to 6 carbon atoms (“C₂₋₆ alkynyl”). In some embodiments, an alkynyl group has 2 to 5 carbon atoms (“C₂₋₅ alkynyl”). In some embodiments, an alkynyl group has 2 to 4 carbon atoms (“C₂₋₄ alkynyl”). In some embodiments, an alkynyl group has 2 to 3 carbon atoms (“C₂₋₃ alkynyl”). In some embodiments, an alkynyl group has 2 carbon atoms (“C₂ alkynyl”). The one or more carbon-carbon triple bonds can be internal (such as in 2-butynyl) or terminal (such as in 1-butynyl). Examples of C₂₋₄ alkynyl groups include, without limitation, ethynyl (C₂), 1-propynyl (C₃), 2-propynyl (C₃), 1-butynyl (C₄), 2-butynyl (C₄), and the like. Examples of C₂₋₆ alkenyl groups include the aforementioned C₂ 4 alkynyl groups as well as pentynyl (C₅), hexynyl (C₆), and the like. Additional examples of alkynyl include heptynyl (C₇), octynyl (C₈), and the like. In certain embodiments, each instance of an alkynyl group is independently optionally substituted, e.g., unsubstituted (an “unsubstituted alkynyl”) or substituted (a “substituted alkynyl”) with one or more substituents. In certain embodiments, the alkynyl group is unsubstituted C₂₋₁₀ alkynyl. In certain embodiments, the alkynyl group is substituted C₂₋₁₀ alkynyl.

“Carbocyclyl” or “carbocyclic” refers to a radical of a non-aromatic cyclic hydrocarbon group having from 3 to 14 ring carbon atoms (“C₃₋₁₄ carbocyclyl”) and zero heteroatoms in the non-aromatic ring system. In some embodiments, a carbocyclyl group has 3 to 10 ring carbon atoms (“C₃₋₁₀ carbocyclyl”). In some embodiments, a carbocyclyl group has 3 to 8 ring carbon atoms (“C₃₋₈ carbocyclyl”). In some embodiments, a carbocyclyl group has 3 to 6 ring carbon atoms (“C₃₋₆ carbocyclyl”). In some embodiments, a carbocyclyl group has 3 to 6 ring carbon atoms (“C₃₋₆ carbocyclyl”). In some embodiments, a carbocyclyl group has 5 to 10 ring carbon atoms (“C₅₋₁₀ carbocyclyl”). Exemplary C₃₋₆ carbocyclyl groups include, without limitation, cyclopropyl (C₃), cyclopropenyl (C₃), cyclobutyl (C₄), cyclobutenyl (C₄), cyclopentyl (C₅), cyclopentenyl (C₅), cyclohexyl (C₆), cyclohexenyl (C₆), cyclohexadienyl (C₆), and the like. Exemplary C₃₋₈ carbocyclyl groups include, without limitation, the aforementioned C₃₋₆ carbocyclyl groups as well as cycloheptyl (C₇), cycloheptenyl (C₇), cycloheptadienyl (C₇), cycloheptatrienyl (C₇), cyclooctyl (C₈), cyclooctenyl (C₈), bicyclo[2.2.1]heptanyl (C₇), bicyclo[2.2.2]octanyl (C₈), and the like. Exemplary C₃ m carbocyclyl groups include, without limitation, the aforementioned C₃₋₈ carbocyclyl groups as well as cyclononyl (C₉), cyclononenyl (C₉), cyclodecyl (C₁₀), cyclodecenyl (C₁₀), octahydro-1H-indenyl (C₉), decahydronaphthalenyl (C₁₀), spiro[4.5]decanyl (C₁₀), and the like. As the foregoing examples illustrate, in certain embodiments, the carbocyclyl group is either monocyclic (“monocyclic carbocyclyl”) or is a fused, bridged or spiro-fused ring system such as a bicyclic system (“bicyclic carbocyclyl”) and can be saturated or can be partially unsaturated. “Carbocyclyl” also includes ring systems wherein the carbocyclyl ring, as defined above, is fused with one or more aryl or heteroaryl groups wherein the point of attachment is on the carbocyclyl ring, and in such instances, the number of carbons continue to designate the number of carbons in the carbocyclic ring system. In certain embodiments, each instance of a carbocyclyl group is independently optionally substituted, e.g., unsubstituted (an “unsubstituted carbocyclyl”) or substituted (a “substituted carbocyclyl”) with one or more substituents. In certain embodiments, the carbocyclyl group is unsubstituted C₃₋₁₀ carbocyclyl. In certain embodiments, the carbocyclyl group is a substituted C₃₋₁₀ carbocyclyl.

In some embodiments, “carbocyclyl” is a monocyclic, saturated carbocyclyl group having from 3 to 14 ring carbon atoms (“C₃₋₁₄ cycloalkyl”). In some embodiments, a cycloalkyl group has 3 to 10 ring carbon atoms (“C₃₋₁₀ cycloalkyl”). In some embodiments, a cycloalkyl group has 3 to 8 ring carbon atoms (“C₃₋₈ cycloalkyl”). In some embodiments, a cycloalkyl group has 3 to 6 ring carbon atoms (“C₃₋₆ cycloalkyl”). In some embodiments, a cycloalkyl group has 5 to 6 ring carbon atoms (“C₅₋₆ cycloalkyl”). In some embodiments, a cycloalkyl group has 5 to 10 ring carbon atoms (“C₅₋₁₀ cycloalkyl”). Examples of C₅₋₆ cycloalkyl groups include cyclopentyl (C₅) and cyclohexyl (C₅). Examples of C₃₋₆ cycloalkyl groups include the aforementioned C₅₋₆ cycloalkyl groups as well as cyclopropyl (C₃) and cyclobutyl (C₄). Examples of C₃₋₈ cycloalkyl groups include the aforementioned C₃₋₆ cycloalkyl groups as well as cycloheptyl (C₇) and cyclooctyl (C₈). In certain embodiments, each instance of a cycloalkyl group is independently unsubstituted (an “unsubstituted cycloalkyl”) or substituted (a “substituted cycloalkyl”) with one or more substituents. In certain embodiments, the cycloalkyl group is unsubstituted C₃₋₁₀ cycloalkyl. In certain embodiments, the cycloalkyl group is substituted C₃₋₁₀ cycloalkyl.

“Heterocyclyl” or “heterocyclic” refers to a radical of a 3- to 14-membered non-aromatic ring system having ring carbon atoms and 1 to 4 ring heteroatoms, wherein each heteroatom is independently selected from nitrogen, oxygen, and sulfur (“3-14 membered heterocyclyl”). In certain embodiments, heterocyclyl or heterocyclic refers to a radical of a 3-10 membered non-aromatic ring system having ring carbon atoms and 1-4 ring heteroatoms, wherein each heteroatom is independently selected from nitrogen, oxygen, and sulfur (“3-10 membered heterocyclyl”). In heterocyclyl groups that contain one or more nitrogen atoms, the point of attachment can be a carbon or nitrogen atom, as valency permits. A heterocyclyl group can either be monocyclic (“monocyclic heterocyclyl”) or a fused, bridged or spiro-fused ring system such as a bicyclic system (“bicyclic heterocyclyl”), and can be saturated or can be partially unsaturated. Heterocyclyl bicyclic ring systems can include one or more heteroatoms in one or both rings. “Heterocyclyl” also includes ring systems wherein the heterocyclyl ring, as defined above, is fused with one or more carbocyclyl groups wherein the point of attachment is either on the carbocyclyl or heterocyclyl ring, or ring systems wherein the heterocyclyl ring, as defined above, is fused with one or more aryl or heteroaryl groups, wherein the point of attachment is on the heterocyclyl ring, and in such instances, the number of ring members continue to designate the number of ring members in the heterocyclyl ring system. In certain embodiments, each instance of heterocyclyl is independently optionally substituted, e.g., unsubstituted (an “unsubstituted heterocyclyl”) or substituted (a “substituted heterocyclyl”) with one or more substituents. In certain embodiments, the heterocyclyl group is unsubstituted 3-10 membered heterocyclyl. In certain embodiments, the heterocyclyl group is substituted 3-10 membered heterocyclyl.

In some embodiments, a heterocyclyl group is a 5-10 membered non-aromatic ring system having ring carbon atoms and 1-4 ring heteroatoms, wherein each heteroatom is independently selected from nitrogen, oxygen, and sulfur (“5-10 membered heterocyclyl”). In some embodiments, a heterocyclyl group is a 5-8 membered non-aromatic ring system having ring carbon atoms and 1-4 ring heteroatoms, wherein each heteroatom is independently selected from nitrogen, oxygen, and sulfur (“5-8 membered heterocyclyl”). In some embodiments, a heterocyclyl group is a 5-6 membered non-aromatic ring system having ring carbon atoms and 1-4 ring heteroatoms, wherein each heteroatom is independently selected from nitrogen, oxygen, and sulfur (“5-6 membered heterocyclyl”). In some embodiments, the 5-6 membered heterocyclyl has 1-3 ring heteroatoms independently selected from nitrogen, oxygen, and sulfur. In some embodiments, the 5-6 membered heterocyclyl has 1-2 ring heteroatoms independently selected from nitrogen, oxygen, and sulfur. In some embodiments, the 5-6 membered heterocyclyl has one ring heteroatom selected from nitrogen, oxygen, and sulfur.

Exemplary 3-membered heterocyclyl groups containing one heteroatom include, without limitation, azirdinyl, oxiranyl, and thiorenyl. Exemplary 4-membered heterocyclyl groups containing one heteroatom include, without limitation, azetidinyl, oxetanyl, and thietanyl. Exemplary 5-membered heterocyclyl groups containing one heteroatom include, without limitation, tetrahydrofuranyl, dihydrofuranyl, tetrahydrothiophenyl, dihydrothiophenyl, pyrrolidinyl, dihydropyrrolyl, and pyrrolyl-2,5-dione. Exemplary 5-membered heterocyclyl groups containing two heteroatoms include, without limitation, dioxolanyl, oxasulfuranyl, disulfuranyl, and oxazolidin-2-one. Exemplary 5-membered heterocyclyl groups containing three heteroatoms include, without limitation, triazolinyl, oxadiazolinyl, and thiadiazolinyl. Exemplary 6-membered heterocyclyl groups containing one heteroatom include, without limitation, piperidinyl, tetrahydropyranyl, dihydropyridinyl, and thianyl. Exemplary 6-membered heterocyclyl groups containing two heteroatoms include, without limitation, piperazinyl, morpholinyl, dithianyl, and dioxanyl. Exemplary 6-membered heterocyclyl groups containing three heteroatoms include, without limitation, triazinanyl, oxadiazinanyl, thiadiazinanyl, oxathiazinanyl, and dioxazinanyl. Exemplary 7-membered heterocyclyl groups containing one heteroatom include, without limitation, azepanyl, oxepanyl and thiepanyl. Exemplary 8-membered heterocyclyl groups containing one heteroatom include, without limitation, azocanyl, oxecanyl, and thiocanyl. Exemplary 5-membered heterocyclyl groups fused to a C₆ aryl ring (also referred to herein as a 5,6-bicyclic heterocyclic ring) include, without limitation, indolinyl, isoindolinyl, dihydrobenzofuranyl, dihydrobenzothienyl, benzoxazolinonyl, and the like. Exemplary 6-membered heterocyclyl groups fused to an aryl ring (also referred to herein as a 6,6-bicyclic heterocyclic ring) include, without limitation, tetrahydroquinolinyl, tetrahydroisoquinolinyl, and the like.

“Aryl” refers to a radical of a monocyclic or polycyclic (e.g., bicyclic or tricyclic) 4n+2 aromatic ring system (e.g., having 6, 10, or 14 n electrons shared in a cyclic array) having 6-14 ring carbon atoms and zero heteroatoms provided in the aromatic ring system (“C₆₋₁₄ aryl”). In some embodiments, an aryl group has six ring carbon atoms (“C₆ aryl”; e.g, phenyl). In some embodiments, an aryl group has ten ring carbon atoms (“C₁₀ aryl”; e.g., naphthyl such as 1-naphthyl and 2-naphthyl). In some embodiments, an aryl group has fourteen ring carbon atoms (“C₁₄ aryl”; e.g., anthracyl). “Aryl” also includes ring systems wherein the aryl ring, as defined above, is fused with one or more carbocyclyl or heterocyclyl groups wherein the radical or point of attachment is on the aryl ring, and in such instances, the number of carbon atoms continue to designate the number of carbon atoms in the aryl ring system. In certain embodiments, each instance of an aryl group is independently optionally substituted, e.g., unsubstituted (an “unsubstituted aryl”) or substituted (a “substituted aryl”) with one or more substituents. In certain embodiments, the aryl group is unsubstituted C₆₋₁₄ aryl. In certain embodiments, the aryl group is substituted C₆₋₁₄ aryl.

“Heteroaryl” refers to a radical of a 5-14 membered monocyclic or polycyclic (e.g., bicyclic or tricyclic) 4n+2 aromatic ring system (e.g., having 6 or 10% electrons shared in a cyclic array) having ring carbon atoms and 1-4 ring heteroatoms provided in the aromatic ring system, wherein each heteroatom is independently selected from nitrogen, oxygen, and sulfur (“5-14 membered heteroaryl”). In certain embodiments, heteroaryl refers to a radical of a 5-10 membered monocyclic or bicyclic 4n+2 aromatic ring system having ring carbon atoms and 1-4 ring heteroatoms provided in the aromatic ring system, wherein each heteroatom is independently selected from nitrogen, oxygen and sulfur (“5-10 membered heteroaryl”). In heteroaryl groups that contain one or more nitrogen atoms, the point of attachment can be a carbon or nitrogen atom, as valency permits. Heteroaryl bicyclic ring systems can include one or more heteroatoms in one or both rings. “Heteroaryl” includes ring systems wherein the heteroaryl ring, as defined above, is fused with one or more carbocyclyl or heterocyclyl groups wherein the point of attachment is on the heteroaryl ring, and in such instances, the number of ring members continue to designate the number of ring members in the heteroaryl ring system. “Heteroaryl” also includes ring systems wherein the heteroaryl ring, as defined above, is fused with one or more aryl groups wherein the point of attachment is either on the aryl or heteroaryl ring, and in such instances, the number of ring members designates the number of ring members in the fused (aryl/heteroaryl) ring system. Bicyclic heteroaryl groups wherein one ring does not contain a heteroatom (e.g., indolyl, quinolinyl, carbazolyl, and the like) the point of attachment can be on either ring, e.g., either the ring bearing a heteroatom (e.g., 2-indolyl) or the ring that does not contain a heteroatom (e.g., 5-indolyl).

In some embodiments, a heteroaryl group is a 5-14 membered aromatic ring system having ring carbon atoms and 1-4 ring heteroatoms provided in the aromatic ring system, wherein each heteroatom is independently selected from nitrogen, oxygen, and sulfur (“5-14 membered heteroaryl”). In some embodiments, a heteroaryl group is a 5-10 membered aromatic ring system having ring carbon atoms and 1-4 ring heteroatoms provided in the aromatic ring system, wherein each heteroatom is independently selected from nitrogen, oxygen, and sulfur (“5-10 membered heteroaryl”). In some embodiments, a heteroaryl group is a 5-8 membered aromatic ring system having ring carbon atoms and 1-4 ring heteroatoms provided in the aromatic ring system, wherein each heteroatom is independently selected from nitrogen, oxygen, and sulfur (“5-8 membered heteroaryl”). In some embodiments, a heteroaryl group is a 5-6 membered aromatic ring system having ring carbon atoms and 1-4 ring heteroatoms provided in the aromatic ring system, wherein each heteroatom is independently selected from nitrogen, oxygen, and sulfur (“5-6 membered heteroaryl”). In some embodiments, the 5-6 membered heteroaryl has 1-3 ring heteroatoms independently selected from nitrogen, oxygen, and sulfur. In some embodiments, the 5-6 membered heteroaryl has 1-2 ring heteroatoms independently selected from nitrogen, oxygen, and sulfur. In some embodiments, the 5-6 membered heteroaryl has 1 ring heteroatom selected from nitrogen, oxygen, and sulfur. In certain embodiments, each instance of a heteroaryl group is independently optionally substituted, e.g., unsubstituted (“unsubstituted heteroaryl”) or substituted (“substituted heteroaryl”) with one or more substituents. In certain embodiments, the heteroaryl group is unsubstituted 5-14 membered heteroaryl. In certain embodiments, the heteroaryl group is substituted 5-14 membered heteroaryl.

Exemplary 5-membered heteroaryl groups containing one heteroatom include, without limitation, pyrrolyl, furanyl and thiophenyl. Exemplary 5-membered heteroaryl groups containing two heteroatoms include, without limitation, imidazolyl, pyrazolyl, oxazolyl, isoxazolyl, thiazolyl, and isothiazolyl. Exemplary 5-membered heteroaryl groups containing three heteroatoms include, without limitation, triazolyl, oxadiazolyl, and thiadiazolyl. Exemplary 5-membered heteroaryl groups containing four heteroatoms include, without limitation, tetrazolyl. Exemplary 6-membered heteroaryl groups containing one heteroatom include, without limitation, pyridinyl. Exemplary 6-membered heteroaryl groups containing two heteroatoms include, without limitation, pyridazinyl, pyrimidinyl, and pyrazinyl. Exemplary 6-membered heteroaryl groups containing three or four heteroatoms include, without limitation, triazinyl and tetrazinyl, respectively. Exemplary 7-membered heteroaryl groups containing one heteroatom include, without limitation, azepinyl, oxepinyl, and thiepinyl. Exemplary 5,6-bicyclic heteroaryl groups include, without limitation, indolyl, isoindolyl, indazolyl, benzotriazolyl, benzothiophenyl, isobenzothiophenyl, benzofuranyl, benzoisofuranyl, benzimidazolyl, benzoxazolyl, benzisoxazolyl, benzoxadiazolyl, benzthiazolyl, benzisothiazolyl, benzthiadiazolyl, indolizinyl, and purinyl. Exemplary 6,6-bicyclic heteroaryl groups include, without limitation, naphthyridinyl, pteridinyl, quinolinyl, isoquinolinyl, cinnolinyl, quinoxalinyl, phthalazinyl, and quinazolinyl.

“Fused” or “ortho-fused” are used interchangeably herein, and refer to two rings that have two atoms and one bond in common, e.g.,

“Bridged” refers to a ring system containing (1) a bridgehead atom or group of atoms which connect two or more non-adjacent positions of the same ring; or (2) a bridgehead atom or group of atoms which connect two or more positions of different rings of a ring system and does not thereby form an ortho-fused ring, e.g,

“Spiro” or “Spiro-fused” refers to a group of atoms which connect to the same atom of a carbocyclic or heterocyclic ring system (geminal attachment), thereby forming a ring, e.g,

Spiro-fusion at a bridgehead atom is also contemplated.

“Partially unsaturated” refers to a group that includes at least one double or triple bond. The term “partially unsaturated” is intended to encompass rings having multiple sites of unsaturation, but is not intended to include aromatic groups (e.g., aryl or heteroaryl groups) as herein defined. Likewise, “saturated” refers to a group that does not contain a double or triple bond, i.e., contains all single bonds.

In some embodiments, aliphatic, alkyl, alkenyl, alkynyl, carbocyclyl, heterocyclyl, aryl, and heteroaryl groups, as defined herein, are optionally substituted (e.g., “substituted” or “unsubstituted” aliphatic, “substituted” or “unsubstituted” alkyl, “substituted” or “unsubstituted” alkenyl, “substituted” or “unsubstituted” alkynyl, “substituted” or “unsubstituted” carbocyclyl, “substituted” or “unsubstituted” heterocyclyl, “substituted” or “unsubstituted” aryl or “substituted” or “unsubstituted” heteroaryl group). In general, the term “substituted”, whether preceded by the term “optionally” or not, means that at least one hydrogen present on a group (e.g., a carbon or nitrogen atom) is replaced with a permissible substituent, e.g., a substituent which upon substitution results in a stable compound, e.g., a compound which does not spontaneously undergo transformation such as by rearrangement, cyclization, elimination, or other reaction. Unless otherwise indicated, a “substituted” group has a substituent at one or more substitutable positions of the group, and when more than one position in any given structure is substituted, the substituent is either the same or different at each position. The term “substituted” is contemplated to include substitution with all permissible substituents of organic compounds, including any of the substituents described herein that results in the formation of a stable compound. The present disclosure contemplates any and all such combinations in order to arrive at a stable compound. For purposes of this disclosure, heteroatoms such as nitrogen may have hydrogen substituents and/or any suitable substituent as described herein which satisfy the valencies of the heteroatoms and results in the formation of a stable moiety.

Exemplary carbon atom substituents include, but are not limited to, halogen, —CN, —NO₂, —N₃, —SO₂H, —SO₃H, —OH, —OR^(aa), —ON(R^(bb))₂, —N(R^(bb))₂, —N(R^(bb))₃ ⁺X⁻, —N(OR^(cc))R^(bb), —SH, —SR³³, —SSR^(cc), —C(═O)R^(aa), —CO₂H, —CHO, —C(OR^(cc))₂, —CO₂R^(aa), —OC(═O)R^(aa), —OCO₂R^(aa), —C(═O)N(R^(bb))₂, —OC(═O)N(R^(bb))₂, —NR^(bb)C(═O)R^(aa), —NR^(bb)CO₂R^(aa), —NR^(bb)C(═O)N(R^(bb))₂, —C(═NR^(bb))R^(aa), —C(═NR^(bb))OR^(aa), —OC(═NR^(bb))R^(aa), —OC(═NR^(bb))OR^(aa), —C(═NR^(bb))N(R^(bb))₂, —OC(═NR^(bb))N(R^(bb))₂, —NR^(bb)C(═NR^(bb))N(R^(bb))₂, —C(═O)NR^(bb)SO₂R^(aa), —NR^(bb)SO₂R^(aa), —SO₂N(R^(bb))₂, —SO₂R^(aa), —SO₂OR^(aa), —OSO₂R^(aa), —S(═O)R^(aa), —OS(═O)R^(aa), —Si(R^(aa))₃, —OSi(R^(aa))₃—C(═S)N(R^(bb))₂, —C(═O)SR^(aa), —C(═S)SR^(aa), —SC(═S)SR^(aa), —SC(═O)SR^(aa), —OC(═O)SR^(aa), —SC(═O)OR^(aa), —SC(═O)R^(aa), —P(═O)₂R^(aa), —OP(═O)₂R^(aa), —P(═O)(R^(aa))₂, —OP(═O)(R^(aa))₂, —OP(═O)(OR^(cc))₂, —P(═O)₂N(R^(bb))₂, —OP(═O)₂N(R^(bb))₂, —P(═O)(NR^(bb))₂, —OP(═O)(NR^(bb))₂, —NR^(bb)P(═O)(OR^(cc))₂, —NR^(bb)P(═O)(NR^(bb))₂, —P(R^(cc))₂, —P(R^(cc))₃, —OP(R^(cc))₂, —OP(R^(cc))₃, —B(R^(aa))₂, —B(OR^(cc))₂, —BR^(aa)(OR^(cc)), C₁₋₁₀ alkyl, C₁₋₁₀ perhaloalkyl, C₂₋₁₀ alkenyl, C₂₋₁₀ alkynyl, C₃₋₁₀ carbocyclyl, 3-14 membered heterocyclyl, G, u aryl, and 5-14 membered heteroaryl, wherein each alkyl, alkenyl, alkynyl, carbocyclyl, heterocyclyl, aryl, and heteroaryl is independently substituted with 0, 1, 2, 3, 4, or 5 R^(dd) groups; or two geminal hydrogens on a carbon atom are replaced with the group ═O, ═S, ═NN(R^(bb))₂, =NNR^(bb)C(═O)R^(aa), =NNR^(bb)C(═O)OR^(aa), =NNR^(bb)S(═O)₂R^(aa), =NR^(bb), or =NOR^(cc);

each instance of R^(aa) is, independently, selected from C₁₋₁₀ alkyl, C₁₋₁₀ perhaloalkyl, C₂₋₁₀ alkenyl, C₂₋₁₀ alkynyl, C₃₋₁₀ carbocyclyl, 3-14 membered heterocyclyl, C₆₋₁₄ aryl, and 5-14 membered heteroaryl, or two R^(aa) groups are joined to form a 3-14 membered heterocyclyl or 5-14 membered heteroaryl ring, wherein each alkyl, alkenyl, alkynyl, carbocyclyl, heterocyclyl, aryl, and heteroaryl is independently substituted with 0, 1, 2, 3, 4, or 5 R^(dd) groups;

each instance of R^(bb) is, independently, selected from hydrogen, —OH, —OR^(aa), —N(R^(cc))₂, —CN, —C(═O)R^(aa), —C(═O)N(R^(cc))₂, —CO₂R^(aa), —SO₂R^(aa), —C(═NR^(cc))OR^(aa), —C(═NR^(cc))N(R^(cc))₂, —SO₂N(R^(cc))₂, —SO₂R^(cc), —SO₂OR^(cc), —SOR^(aa), —C(═S)N(R^(cc))₂, —C(═O)SR^(cc), —C(═S)SR^(cc), —P(═O)₂R^(aa), —P(═O)(R^(aa))₂, —P(═O)₂N(R^(cc))₂, —P(═O)(NR^(cc))₂, C₁₋₁₀ alkyl, C₁₋₁₀ perhaloalkyl, C₂₋₁₀ alkenyl, C₂₋₁₀ alkynyl, C₃₋₁₀ carbocyclyl, 3-14 membered heterocyclyl, C₆₋₁₄ aryl, and 5-14 membered heteroaryl, or two R^(bb) groups are joined to form a 3-14 membered heterocyclyl or 5-14 membered heteroaryl ring, wherein each alkyl, alkenyl, alkynyl, carbocyclyl, heterocyclyl, aryl, and heteroaryl is independently substituted with 0, 1, 2, 3, 4, or 5 R^(dd) groups;

each instance of R^(cc) is, independently, selected from hydrogen, C₁₋₁₀ alkyl, C₁₋₁₀ perhaloalkyl, C₂₋₁₀ alkenyl, C₂₋₁₀ alkynyl, C₃₋₁₀ carbocyclyl, 3-14 membered heterocyclyl, C₆₋₁₄ aryl, and 5-14 membered heteroaryl, or two R^(cc) groups are joined to form a 3-14 membered heterocyclyl or 5-14 membered heteroaryl ring, wherein each alkyl, alkenyl, alkynyl, carbocyclyl, heterocyclyl, aryl, and heteroaryl is independently substituted with 0, 1, 2, 3, 4, or 5 R^(dd) groups;

each instance of R^(dd) is, independently, selected from halogen, —CN, —NO₂, —N₃, —SO₂H, —SO₃H, —OH, —OR^(ee), —ON(R^(ff))₂, —N(R^(ff))₂, —N(R^(ff))₃ ⁺X⁻, —N(OR^(ee))R^(ff), —SH, —SR^(ee), —SSR^(ee), —C(═O)R^(ee), —CO₂H, —CO₂R^(ee), —OC(═O)R^(ee), —OCO₂R^(ee), —C(═O)N(R^(ff))₂, —OC(═O)N(R^(ff))₂, —NR^(ff)C(═O)R^(ee), —NR^(ff)CO₂R^(ee), —NR^(ff)C(═O)N(R^(ff))₂, —C(═NR^(ff))OR^(ee), —OC(═NR^(ff))R^(ee), —OC(═NR^(ff))OR^(ee), —C(═NR^(ff))N(R^(ff))₂, —OC(═NR^(ff))N(R^(ff))₂, —NR^(ff)C(═NR^(ff))N(R^(ff))₂, —NR^(ff)SO₂R^(ee), —SO₂N(R^(ff))₂, —SO₂R^(ee), —SO₂OR^(ee), —OSO₂R^(ee), —S(═O)R^(ee), —Si(R^(ee))₃, —OSi(R^(ee))₃, —C(═S)N(R^(ff))₂, —C(═O)SR^(ee), —C(═S)SR^(ee), —SC(═S)SR^(ee), —P(═O)₂R^(ee), —P(═O)(R^(ee))₂, —OP(═O)(R^(ee))₂, —OP(═O)(OR^(ee))₂, C₁₋₆ alkyl, C₁₋₆ perhaloalkyl, C₂₋₆ alkenyl, C₂₋₆ alkynyl, C₃₋₁₀ carbocyclyl, 3-10 membered heterocyclyl, C₆₋₁₀ aryl, 5-10 membered heteroaryl, wherein each alkyl, alkenyl, alkynyl, carbocyclyl, heterocyclyl, aryl, and heteroaryl is independently substituted with 0, 1, 2, 3, 4, or 5 R^(gg) groups, or two geminal R^(dd) substituents can be joined to form ═O or ═S;

each instance of R^(ee) is, independently, selected from C₁₋₆ alkyl, C₁₋₆ perhaloalkyl, C₂₋₆ alkenyl, C₂₋₆ alkynyl, C₃₋₁₀ carbocyclyl, C₆₋₁₀ aryl, 3-10 membered heterocyclyl, and 3-10 membered heteroaryl, wherein each alkyl, alkenyl, alkynyl, carbocyclyl, heterocyclyl, aryl, and heteroaryl is independently substituted with 0, 1, 2, 3, 4, or 5 R^(gg) groups;

each instance of R^(ff) is, independently, selected from hydrogen, C₁₋₆ alkyl, C₁₋₆ perhaloalkyl, C₂₋₆ alkenyl, C₂₋₆ alkynyl, C₃₋₁₀ carbocyclyl, 3-10 membered heterocyclyl, C₆₋₁₀ aryl and 5-10 membered heteroaryl, or two R^(ff) groups are joined to form a 3-14 membered heterocyclyl or 5-14 membered heteroaryl ring, wherein each alkyl, alkenyl, alkynyl, carbocyclyl, heterocyclyl, aryl, and heteroaryl is independently substituted with 0, 1, 2, 3, 4, or 5 R^(gg) groups; and

each instance of R^(gg) is, independently, halogen, —CN, —NO₂, —N₃, —SO₂H, —SO₃H, —OH, —OC₁₋₆ alkyl, —ON(C₁₋₆ alkyl)₂, —N(C₁₋₆ alkyl)₂, —N(C₁₋₆ alkyl)₃ ⁺X⁻, —NH(C₁₋₆ alkyl)₂ ⁺X⁻, —NH₂(C₁₋₆ alkyl)⁺X⁻, —NH₃ ⁺X⁻, —N(OC₁₋₆ alkyl)(C₁₋₆ alkyl), —N(OH)(C₁₋₆ alkyl), —NH(OH), —SH, —SC₁₋₆ alkyl, —SS(C₁₋₆ alkyl), —C(═O)(C₁₋₆ alkyl), —CO₂H, —CO₂(C₁₋₆ alkyl), —OC(═O)(C₁₋₆ alkyl), —OCO₂(C₁₋₆ alkyl), —C(═O)NH₂, —C(═O)N(C₁₋₆ alkyl)₂, —OC(═O)NH(C₁₋₆ alkyl), —NHC(═O)(C₁₋₆ alkyl), —N(C₁₋₆ alkyl)C(═O)(C₁₋₆ alkyl), —NHCO₂(C₁₋₆ alkyl), —NHC(═O)N(C₁₋₆ alkyl)₂, —NHC(═O)NH(C₁₋₆ alkyl), —NHC(═O)NH₂, —C(═NH)O(C₁₋₆ alkyl), —OC(═NH)(C₁₋₆ alkyl), —OC(═NH)OC₁₋₆ alkyl, —C(═NH)N(C₁₋₆ alkyl)₂, —C(═NH)NH(C₁₋₆ alkyl), —C(═NH)NH₂, —OC(═NH)N(C₁₋₆ alkyl)₂, —OC(NH)NH(C₁₋₆ alkyl), —OC(NH)NH₂, —NHC(NH)N(C₁₋₆ alkyl)₂, —NHC(═NH)NH₂, —NHSO₂(C₁₋₆ alkyl), —SO₂N(C₁₋₆ alkyl)₂, —SO₂NH(C_(w) alkyl), —SO₂NH₂, —SO₂C₁₋₆ alkyl, —SO₂OC₁₋₆ alkyl, —OSO₂C₁₋₆ alkyl, —SOC₁₋₆ alkyl, —Si(C₁₋₆ alkyl)₃, —OSi(C₁₋₆ alkyl)₃-C(═S)N(C₁₋₆ alkyl)₂, C(═S)NH(C₁₋₆ alkyl), C(═S)NH₂, —C(═O)S(C₁₋₆ alkyl), —C(═S)SC₁₋₆ alkyl, —SC(═S)SC₁₋₆ alkyl, —P(═O)₂(C_(M) alkyl), —P(═O)(C₁₋₆ alkyl)₂, —OP(═O)(C₁₋₆ alkyl)₂, —OP(═O)(OC₁₋₆ alkyl)₂, C₁₋₆ alkyl, C₁₋₆ perhaloalkyl, C₂₋₆ alkenyl, C₂₋₆ alkynyl, C₃₋₁₀ carbocyclyl, C₆₋₁₀ aryl, 3-10 membered heterocyclyl, 5-10 membered heteroaryl; or two geminal R^(gg) substituents can be joined to form ═O or ═S; wherein X is a counterion.

A “counterion” or “anionic counterion” is a negatively charged group associated with a cationic quaternary amino group in order to maintain electronic neutrality. Exemplary counterions include halide ions (e.g., F⁻, Cl⁻, Br⁻, I⁻), NO₃ ⁻, ClO₄ ⁻, OH⁻, H₂PO₄ ⁻, HSO₄ ⁻, sulfonate ions (e.g, methansulfonate, trifluoromethanesulfonate, p-toluenesulfonate, benzenesulfonate, 10-camphor sulfonate, naphthalene-2-sulfonate, naphthalene-1-sulfonic acid-5-sulfonate, ethan-1-sulfonic acid-2-sulfonate, and the like), and carboxylate ions (e.g., acetate, ethanoate, propanoate, benzoate, glycerate, lactate, tartrate, glycolate, and the like).

“Halo” or “halogen” refers to fluorine (fluoro, —F), chlorine (chloro, —Cl), bromine (bromo, —Br), or iodine (iodo, —I).

Nitrogen atoms can be substituted or unsubstituted as valency permits, and include primary, secondary, tertiary, and quaternary nitrogen atoms. Exemplary nitrogen atom substitutents include, but are not limited to, hydrogen, —OH, —OR^(aa), —N(R^(cc))₂, —CN, —C(═O)R^(aa), —C(═O)N(R^(cc))₂, —CO₂R^(aa), —SO₂R^(aa), —C(═NR^(bb))R^(aa), —C(═NR^(cc))OR^(aa), —C(═NR^(cc))N(R^(cc))₂, —SO₂N(R^(cc))₂, —SO₂R^(cc), —SO₂OR^(cc), —SOR^(aa), —C(═S)N(R^(cc))₂, —C(═O)SR^(cc), —C(═S)SR^(cc), —P(═O)₂R^(aa), —P(═O)(R^(aa))₂, —P(═O)₂N(R^(cc))₂, —P(═O)(NR^(cc))₂, C₁₋₁₀ alkyl, C₁₋₁₀ perhaloalkyl, C₂₋₁₀ alkenyl, C₂₋₁₀ alkynyl, C₃₋₁₀ carbocyclyl, 3-14 membered heterocyclyl, C₆₋₁₄ aryl, and 5-14 membered heteroaryl, or two R^(cc) groups attached to a nitrogen atom are joined to form a 3-14 membered heterocyclyl or 5-14 membered heteroaryl ring, wherein each alkyl, alkenyl, alkynyl, carbocyclyl, heterocyclyl, aryl, and heteroaryl is independently substituted with 0, 1, 2, 3, 4, or 5 R^(dd) groups, and wherein R^(aa), R^(bb), R^(cc) and R^(dd) are as defined above.

In certain embodiments, the substituent present on a nitrogen atom is a nitrogen protecting group (also referred to as an amino protecting group). Nitrogen protecting groups include, but are not limited to, —OH, —OR^(aa), —N(R^(cc))₂, —C(═O)R^(aa), —C(═O)N(R^(cc))₂, —CO₂R^(aa), —SO₂R^(aa), —C(═NR^(cc))R^(aa), —C(═NR^(cc))OR^(aa), —C(═NR^(cc))N(R^(cc))₂, —SO₂N(R^(cc))₂, —SO₂R^(cc), —SO₂OR^(cc), —SOR^(aa), —C(═S)N(R^(cc))₂, —C(═O)SR^(cc), —C(═S)SR^(cc), C₁₋₁₀ alkyl (e.g, aralkyl, heteroaralkyl), C₂₋₁₀ alkenyl, C₂₋₁₀ alkynyl, C₃₋₁₀ carbocyclyl, 3-14 membered heterocyclyl, C₆₋₁₄ aryl, and 5-14 membered heteroaryl groups, wherein each alkyl, alkenyl, alkynyl, carbocyclyl, heterocyclyl, aralkyl, aryl, and heteroaryl is independently substituted with 0, 1, 2, 3, 4, or 5 R^(dd) groups, and wherein R^(aa), R^(bb), R^(cc), and R^(dd) are as defined herein. Nitrogen protecting groups are well known in the art and include those described in detail in Protecting Groups in Organic Synthesis, T. W. Greene and P. G. M. Wuts, 3^(rd) edition, John Wiley & Sons, 1999, incorporated herein by reference.

Amide nitrogen protecting groups (e.g., —C(═O)R^(aa)) include, but are not limited to, formamide, acetamide, chloroacetamide, trichloroacetamide, trifluoroacetamide, phenylacetamide, 3-phenylpropanamide, picolinamide, 3-pyridylcarboxamide, N-benzoylphenylalanyl derivative, benzamide, p-phenylbenzamide, o-nitophenylacetamide, o-nitrophenoxyacetamide, acetoacetamide, (N′-dithiobenzyloxyacylamino)acetamide, 3-(p-hydroxyphenyl)propanamide, 3-(o-nitrophenyl)propanamide, 2-methyl-2-(o-nitrophenoxy)propanamide, 2-methyl-2-(o-phenylazophenoxy)propanamide, 4-chlorobutanamide, 3-methyl-3-nitrobutanamide, o-nitrocinnamide, N-acetylmethionine, o-nitrobenzamide, and o-(benzoyloxymethyl)benzamide.

Carbamate nitrogen protecting groups (e.g., —C(═O)OR^(aa)) include, but are not limited to, methyl carbamate, ethyl carbamante, 9-fluorenylmethyl carbamate (Fmoc), 9-(2-sulfo)fluorenylmethyl carbamate, 9-(2,7-dibromo)fluoroenylmethyl carbamate, 2,7-di-t-butyl-[9-(10,10-dioxo-10,10,10,10-tetrahydrothioxanthyl)]methyl carbamate (DBD-Tmoc), 4-methoxyphenacyl carbamate (Phenoc), 2,2,2-trichloroethyl carbamate (Troc), 2-trimethylsilylethyl carbamate (Teoc), 2-phenylethyl carbamate (hZ), 1-(1-adamantyl)-1-methylethyl carbamate (Adpoc), 1,1-dimethyl-2-haloethyl carbamate, 1,1-dimethyl-2,2-dibromoethyl carbamate (DB-t-BOC), 1,1-dimethyl-2,2,2-trichloroethyl carbamate (TCBOC), 1-methyl-1-(4-biphenylyl)ethyl carbamate (Bpoc), 1-(3,5-di-t-butylphenyl)-1-methylethyl carbamate (t-Bumeoc), 2-(2′- and 4′-pyridyl)ethyl carbamate (Pyoc), 2-(N,N-dicyclohexylcarboxamido)ethyl carbamate, t-butyl carbamate (BOC), 1-adamantyl carbamate (Adoc), vinyl carbamate (Voc), allyl carbamate (Alloc), 1-isopropylallyl carbamate (Ipaoc), cinnamyl carbamate (Coc), 4-nitrocinnamyl carbamate (Noc), 8-quinolyl carbamate, N-hydroxypiperidinyl carbamate, alkyldithio carbamate, benzyl carbamate (Cbz), p-methoxybenzyl carbamate (Moz), p-nitobenzyl carbamate, p-bromobenzyl carbamate, p-chlorobenzyl carbamate, 2,4-dichlorobenzyl carbamate, 4-methylsulfinylbenzyl carbamate (Msz), 9-anthrylmethyl carbamate, diphenylmethyl carbamate, 2-methylthioethyl carbamate, 2-methylsulfonylethyl carbamate, 2-(p-toluenesulfonyl)ethyl carbamate, [2-(1,3-dithianyl)]methyl carbamate (Dmoc), 4-methylthiophenyl carbamate (Mtpc), 2,4-dimethylthiophenyl carbamate (Bmpc), 2-phosphonioethyl carbamate (Peoc), 2-triphenylphosphonioisopropyl carbamate (Ppoc), 1,1-dimethyl-2-cyanoethyl carbamate, m-chloro-p-acyloxybenzyl carbamate, p-(dihydroxyboryl)benzyl carbamate, 5-benzisoxazolylmethyl carbamate, 2-(trifluoromethyl)-6-chromonylmethyl carbamate (Tcroc), m-nitrophenyl carbamate, 3,5-dimethoxybenzyl carbamate, o-nitrobenzyl carbamate, 3,4-dimethoxy-6-nitrobenzyl carbamate, phenyl(o-nitrophenyl)methyl carbamate, t-amyl carbamate, S-benzyl thiocarbamate, p-cyanobenzyl carbamate, cyclobutyl carbamate, cyclohexyl carbamate, cyclopentyl carbamate, cyclopropylmethyl carbamate, p-decyloxybenzyl carbamate, 2,2-dimethoxyacylvinyl carbamate, o-(N,N-dimethylcarboxamido)benzyl carbamate, 1,1-dimethyl-3-(N,N-dimethylcarboxamido)propyl carbamate, 1,1-dimethylpropynyl carbamate, di(2-pyridyl)methyl carbamate, 2-furanylmethyl carbamate, 2-iodoethyl carbamate, isoborynl carbamate, isobutyl carbamate, isonicotinyl carbamate, p-(p′-methoxyphenylazo)benzyl carbamate, 1-methylcyclobutyl carbamate, 1-methylcyclohexyl carbamate, 1-methyl-1-cyclopropylmethyl carbamate, 1-methyl-1-(3,5-dimethoxyphenyl)ethyl carbamate, 1-methyl-1-(p-phenylazophenyl)ethyl carbamate, 1-methyl-1-phenylethyl carbamate, 1-methyl-1-(4-pyridyl)ethyl carbamate, phenyl carbamate, p-(phenylazo)benzyl carbamate, 2,4,6-tri-t-butylphenyl carbamate, 4-(trimethylammonium)benzyl carbamate, and 2,4,6-trimethylbenzyl carbamate.

Sulfonamide nitrogen protecting groups (e.g., —S(═O)₂R^(aa)) include, but are not limited to, p-toluenesulfonamide (Ts), benzenesulfonamide, 2,3,6,-trimethyl-4-methoxybenzenesulfonamide (Mtr), 2,4,6-trimethoxybenzenesulfonamide (Mtb), 2,6-dimethyl-4-methoxybenzenesulfonamide (Pme), 2,3,5,6-tetramethyl-4-methoxybenzenesulfonamide (Mte), 4-methoxybenzenesulfonamide (Mbs), 2,4,6-trimethylbenzenesulfonamide (Mts), 2,6-dimethoxy-4-methylbenzenesulfonamide (iMds), 2,2,5,7,8-pentamethylchroman-6-sulfonamide (Pmc), methanesulfonamide (Ms), β-trimethylsilylethanesulfonamide (SES), 9-anthracenesulfonamide, 4-(4′,8′-dimethoxynaphthylmethyl)benzenesulfonamide (DNMBS), benzylsulfonamide, trifluoromethylsulfonamide, and phenacylsulfonamide.

Other nitrogen protecting groups include, but are not limited to, phenothiazinyl-(10)-acyl derivative, N′-p-toluenesulfonylaminoacyl derivative, N′-phenylaminothioacyl derivative, N-benzoylphenylalanyl derivative, N-acetylmethionine derivative, 4,5-diphenyl-3-oxazolin-2-one, N-phthalimide, N-dithiasuccinimide (Dts), N-2,3-diphenylmaleimide, N-2,5-dimethylpyrrole, N-1,1,4,4-tetramethyldisilylazacyclopentane adduct (STABASE), 5-substituted 1,3-dimethyl-1,3,5-triazacyclohexan-2-one, 5-substituted 1,3-dibenzyl-1,3,5-triazacyclohexan-2-one, 1-substituted 3,5-dinitro-4-pyridone, N-methylamine, N-allylamine, N-[2-(trimethylsilyl)ethoxy]methylamine (SEM), N-3-acetoxypropylamine, N-(1-isopropyl-4-nitro-2-oxo-3-pyroolin-3-yl)amine, quatemary ammonium salts, N-benzylamine, N-di(4-methoxyphenyl)methylamine, N-5-dibenzosuberylamine, N-triphenylmethylamine (Tr), N-[(4-methoxyphenyl)diphenylmethyl]amine (MMTr), N-9-phenylfluorenylamine (PhF), N-2,7-dichloro-9-fluorenylmethyleneamine, N-ferrocenylmethylamino (Fcm), N-2-picolylamino N′-oxide, N-1,1-dimethylthiomethyleneamine, N-benzylideneamine, N-p-methoxybenzylideneamine, N-diphenylmethyleneamine, N-[(2-pyridyl)mesityl]methyleneamine, N—(N′,N′ dimethylaminomethylene)amine, N,N′-isopropylidenediamine, N-p-nitrobenzylideneamine, N-salicylideneamine, N-5-chlorosalicylideneamine, N-(5-chloro-2-hydroxyphenyl)phenylmethyleneamine, N-cyclohexylideneamine, N-(5,5-dimethyl-3-oxo-1-cyclohexenyl)amine, N-borane derivative, N-diphenylborinic acid derivative, N-[phenyl(pentaacylchromium- or tungsten)acyl]amine, N-copper chelate, N-zinc chelate, N-nitroamine, N-nitrosoamine, amine N-oxide, diphenylphosphinamide (Dpp), dimethylthiophosphinamide (Mpt), diphenylthiophosphinamide (Ppt), dialkyl phosphoramidates, dibenzyl phosphoramidate, diphenyl phosphoramidate, benzenesulfenamide, o-nitrobenzenesulfenamide (Nps), 2,4-dinitrobenzenesulfenamide, pentachlorobenzenesulfenamide, 2-nitro-4-methoxybenzenesulfenamide, triphenylmethylsulfenamide, and 3-nitropyridinesulfenamide (Npys).

In certain embodiments, the substituent present on an oxygen atom is an oxygen protecting group (also referred to as a hydroxyl protecting group). Oxygen protecting groups include, but are not limited to, —R^(aa), —N(R^(bb))₂, —C(═O)SR^(aa), —C(═O)R^(aa), —CO₂R^(aa), —C(═O)N(R^(bb))₂, —C(═NR^(bb))R^(aa), —C(═NR^(bb))OR^(aa), —C(═NR^(bb))N(R^(bb))₂, —S(═O)R^(aa), —SO₂R^(aa), —Si(R^(aa))₃, —P(R^(cc))₂, —P(R^(cc))₃, —P(═O)₂R^(aa), —P(═O)(R^(aa))₂, —P(═O)(OR^(cc))₂, —P(═O)₂N(R^(bb))₂, and —P(═O)(NR^(bb))₂, wherein R^(aa), R^(bb), and R^(cc) are as defined herein. Oxygen protecting groups are well known in the art and include those described in detail in Protecting Groups in Organic Synthesis, T. W. Greene and P. G. M. Wuts, 3^(rd) edition, John Wiley & Sons, 1999, incorporated herein by reference.

Exemplary oxygen protecting groups include, but are not limited to, methyl, methoxylmethyl (MOM), methylthiomethyl (MTM), t-butylthiomethyl, (phenyldimethylsilyl)methoxymethyl (SMOM), benzyloxymethyl (BOM), p-methoxybenzyloxymethyl (PMBM), (4-methoxyphenoxy)methyl (p-AOM), guaiacolmethyl (GUM), t-butoxymethyl, 4-pentenyloxymethyl (POM), siloxymethyl, 2-methoxyethoxymethyl (MEM), 2,2,2-trichloroethoxymethyl, bis(2-chloroethoxy)methyl, 2-(trimethylsilyl)ethoxymethyl (SEMOR), tetrahydropyranyl (THP), 3-bromotetrahydropyranyl, tetrahydrothiopyranyl, 1-methoxycyclohexyl, 4-methoxytetrahydropyranyl (MTHP), 4-methoxytetrahydrothiopyranyl, 4-methoxytetrahydrothiopyranyl S,S-dioxide, 1-[(2-chloro-4-methyl)phenyl]-4-methoxypiperidin-4-yl (CTMP), 1,4-dioxan-2-yl, tetrahydrofuranyl, tetrahydrothiofuranyl, 2,3,3a,4,5,6,7,7a-octahydro-7,8,8-trimethyl-4,7-methanobenzofuran-2-yl, 1-ethoxyethyl, 1-(2-chloroethoxy)ethyl, 1-methyl-1-methoxyethyl, 1-methyl-1-benzyloxyethyl, 1-methyl-1-benzyloxy-2-fluoroethyl, 2,2,2-trichloroethyl, 2-trimethylsilylethyl, 2-(phenylselenyl)ethyl, t-butyl, allyl, p-chlorophenyl, p-methoxyphenyl, 2,4-dinitrophenyl, benzyl (Bn), p-methoxybenzyl, 3,4-dimethoxybenzyl, o-nitrobenzyl, p-nitrobenzyl, p-halobenzyl, 2,6-dichlorobenzyl, p-cyanobenzyl, p-phenylbenzyl, 2-picolyl, 4-picolyl, 3-methyl-2-picolyl N-oxido, diphenylmethyl, p,p′-dinitrobenzhydryl, 5-dibenzosuberyl, triphenylmethyl, a-naphthyldiphenylmethyl, p-methoxyphenyldiphenylmethyl, di(p-methoxyphenyl)phenylmethyl, tri(p-methoxyphenyl)methyl, 4-(4′-bromophenacyloxyphenyl)diphenylmethyl, 4,4′,4″-tris(4,5-dichlorophthalimidophenyl)methyl, 4,4′,4″-tris(levulinoyloxyphenyl)methyl, 4,4′,4″-tris(benzoyloxyphenyl)methyl, 3-(imidazol-1-yl)bis(4′,4″-dimethoxyphenyl)methyl, 1,1-bis(4-methoxyphenyl)-1′-pyrenylmethyl, 9-anthryl, 9-(9-phenyl)xanthenyl, 9-(9-phenyl-10-oxo)anthryl, 1,3-benzodisulfuran-2-yl, benzisothiazolyl S,S-dioxido, trimethylsilyl (TMS), triethylsilyl (TES), triisopropylsilyl (TIPS), dimethylisopropylsilyl (IPDMS), diethylisopropylsilyl (DEIPS), dimethylthexylsilyl, t-butyldimethylsilyl (TBDMS), t-butyldiphenylsilyl (TBDPS), tribenzylsilyl, tri-p-xylylsilyl, triphenylsilyl, diphenylmethylsilyl (DPMS), t-butylmethoxyphenylsilyl (TBMPS), formate, benzoylformate, acetate, chloroacetate, dichloroacetate, trichloroacetate, trifluoroacetate, methoxyacetate, triphenylmethoxyacetate, phenoxyacetate, p-chlorophenoxyacetate, 3-phenylpropionate, 4-oxopentanoate (levulinate), 4,4-(ethylenedithio)pentanoate (levulinoyldithioacetal), pivaloate, adamantoate, crotonate, 4-methoxycrotonate, benzoate, p-phenylbenzoate, 2,4,6-trimethylbenzoate (mesitoate), t-butyl carbonate (BOC), alkyl methyl carbonate, 9-fluorenylmethyl carbonate (Fmoc), alkyl ethyl carbonate, alkyl 2,2,2-trichloroethyl carbonate (Troc), 2-(trimethylsilyl)ethyl carbonate (TMSEC), 2-(phenylsulfonyl) ethyl carbonate (Psec), 2-(triphenylphosphonio) ethyl carbonate (Peoc), alkyl isobutyl carbonate, alkyl vinyl carbonate alkyl allyl carbonate, alkyl p-nitrophenyl carbonate, alkyl benzyl carbonate, alkyl p-methoxybenzyl carbonate, alkyl 3,4-dimethoxybenzyl carbonate, alkyl o-nitrobenzyl carbonate, alkyl p-nitrobenzyl carbonate, alkyl S-benzyl thiocarbonate, 4-ethoxy-1-napththyl carbonate, methyl dithiocarbonate, 2-iodobenzoate, 4-azidobutyrate, 4-nitro-4-methylpentanoate, o-(dibromomethyl)benzoate, 2-formylbenzenesulfonate, 2-(methylthiomethoxy)ethyl, 4-(methylthiomethoxy)butyrate, 2-(methylthiomethoxymethyl)benzoate, 2,6-dichloro-4-methylphenoxyacetate, 2,6-dichloro-4-(1,1,3,3-tetramethylbutyl)phenoxyacetate, 2,4-bis(1,1-dimethylpropyl)phenoxyacetate, chlorodiphenylacetate, isobutyrate, monosuccinoate, (E)-2-methyl-2-butenoate, o-(methoxyacyl)benzoate, a-naphthoate, nitrate, alkyl N,N,N′N′-tetramethylphosphorodiamidate, alkyl N-phenylcarbamate, borate, dimethylphosphinothioyl, alkyl 2,4-dinitrophenylsulfenate, sulfate, methanesulfonate (mesylate), benzylsulfonate, and tosylate (Ts).

In certain embodiments, the substituent present on a sulfur atom is a sulfur protecting group (also referred to as a thiol protecting group). Sulfur protecting groups include, but are not limited to, —R^(aa), —N(R^(bb))₂, —C(═O)SR^(aa), —C(═O)R^(aa), —CO₂R^(aa), —C(═O)N(R^(bb))₂, —C(═NR^(bb))R^(aa), —C(═NR^(bb))OR^(aa), —C(═NR^(bb))N(R^(bb))₂, —S(═O)R^(aa), —SO₂R^(aa)Si(R^(aa))₃, —P(R^(cc))₂, —P(R^(cc))₃, —P(═O)₂R^(aa), —P(═O)(R^(aa))₂, —P(═O)(OR^(cc))₂, —P(═O)₂N(R^(bb))₂, and —P(═O)(NR^(bb))₂, wherein R^(aa), R^(bb), and R^(cc) are as defined herein. Sulfur protecting groups are well known in the art and include those described in detail in Protecting Groups in Organic Synthesis, T. W. Greene and P. G. M. Wuts, 3^(rd) edition, John Wiley & Sons, 1999, incorporated herein by reference.

As used herein, a “leaving group”, or “LG”, is a term understood in the art to refere to a molecular fragment that departs with a pair of electrons upon heterolytic bond cleavage, wherein the molecular fragment is an anion or neutral molecule. See, for example, Smith, March Advanced Organic Chemistry 6th ed. (501-502). Examples of suitable leaving groups include, but are not limited to, halides (such as chloride, bromide, or iodide), alkoxycarbonyloxy, aryloxycarbonyloxy, alkanesulfonyloxy, arenesulfonyloxy, alkyl-carbonyloxy (e.g., acetoxy), arylcarbonyloxy, aryloxy, methoxy, N,O-dimethylhydroxylamino, pixyl, haloformates, —NO₂, trialkylammonium, and aryliodonium salts. In some embodiments, the leaving group is a sulfonic acid ester. In some embodiments, the sulfonic acid ester comprises the formula —OSO₂RL^(G1) wherein R^(LG1) is selected from the group consisting alkyl optionally, alkenyl optionally substituted, heteroalkyl optionally substituted, aryl optionally substituted, heteroaryl optionally substituted, arylalkyl optionally substituted, and heterarylalkyl optionally substituted. In some embodiments, R^(LG1) is substituted or unsubstituted C₁-C₆ alkyl. In some embodiments, R^(LG1) is methyl. In some embodiments, R^(LG1) is —CF₃. In some embodiments, R^(LG1) is substituted or unsubstituted aryl. In some embodiments, R^(LG1) is substituted or unsubstituted phenyl. In some embodiments R^(LG1) is:

In some cases, the leaving group is toluenesulfonate (tosylate, Ts), methanesulfonate (mesylate, Ms), p-bromobenzenesulfonyl (brosylate, Bs), or trifluoromethanesulfonate (triflate, Tf). In some cases, the leaving group is a brosylate (p-bromobenzenesulfonyl). In some cases, the leaving group is a nosylate (2-nitrobenzenesulfonyl). In some embodiments, the leaving group is a sulfonate-containing group. In some embodiments, the leaving group is a tosylate group. The leaving group may also be a phosphineoxide (e.g., formed during a Mitsunobu reaction) or an internal leaving group such as an epoxide or cyclic sulfate.

These and other exemplary substituents are described in more detail in the Detailed Description, Examples, and claims. The present disclosure is not intended to be limited in any manner by the above exemplary listing of substituents.

“Pharmaceutically acceptable salt” refers to those salts which are, within the scope of sound medical judgment, suitable for use in contact with the tissues of humans and other animals without undue toxicity, irritation, allergic response, and the like, and are commensurate with a reasonable benefit/risk ratio. Pharmaceutically acceptable salts are well known in the art. For example, Berge et al. describe pharmaceutically acceptable salts in detail in J. Pharmaceutical Sciences (1977) 66:1-19. Pharmaceutically acceptable salts of the compounds describe herein include those derived from suitable inorganic and organic acids and bases. Examples of pharmaceutically acceptable, nontoxic acid addition salts are salts of an amino group formed with inorganic acids such as hydrochloric acid, hydrobromic acid, phosphoric acid, sulfuric acid and perchloric acid or with organic acids such as acetic acid, oxalic acid, maleic acid, tartaric acid, citric acid, succinic acid, or malonic acid or by using other methods used in the art such as ion exchange. Other pharmaceutically acceptable salts include adipate, alginate, ascorbate, aspartate, benzenesulfonate, benzoate, bisulfate, borate, butyrate, camphorate, camphorsulfonate, citrate, cyclopentanepropionate, digluconate, dodecylsulfate, ethanesulfonate, formate, fumarate, glucoheptonate, glycerophosphate, gluconate, hemisulfate, heptanoate, hexanoate, hydroiodide, 2-hydroxy-ethanesulfonate, lactobionate, lactate, laurate, lauryl sulfate, malate, maleate, malonate, methanesulfonate, 2-naphthalenesulfonate, nicotinate, nitrate, oleate, oxalate, palmitate, pamoate, pectinate, persulfate, 3-phenylpropionate, phosphate, picrate, pivalate, propionate, stearate, succinate, sulfate, tartrate, thiocyanate, p-toluenesulfonate, undecanoate, valerate salts, and the like. Salts derived from appropriate bases include alkali metal, alkaline earth metal, ammonium and N+(C₁₋₄alkyl)₄ salts. Representative alkali or alkaline earth metal salts include sodium, lithium, potassium, calcium, magnesium, and the like. Further pharmaceutically acceptable salts include, when appropriate, quaternary salts.

A “subject” to which administration is contemplated includes, but is not limited to, humans (e.g., a male or female of any age group, e.g., a pediatric subject (e.g, infant, child, adolescent) or adult subject (e.g., young adult, middle-aged adult or senior adult)) and/or other non-human animals, for example, non-human mammals (e.g., primates (e.g., cynomolgus monkeys, rhesus monkeys); commercially relevant mammals such as cattle, pigs, horses, sheep, goats, cats, and/or dogs), birds (e.g., commercially relevant birds such as chickens, ducks, geese, and/or turkeys), rodents (e.g., rats and/or mice), reptiles, amphibians, and fish. In certain embodiments, the non-human animal is a mammal. The non-human animal may be a male or female at any stage of development. A non-human animal may be a transgenic animal.

“Condition,” “disease,” and “disorder” are used interchangeably herein.

“Treat,” “treating” and “treatment” encompasses an action that occurs while a subject is suffering from a condition which reduces the severity of the condition or retards or slows the progression of the condition (“therapeutic treatment”). “Treat,” “treating” and “treatment” also encompasses an action that occurs before a subject begins to suffer from the condition and which inhibits or reduces the severity of the condition (“prophylactic treatment”).

An “effective amount” of a compound refers to an amount sufficient to elicit the desired biological response, e.g., treat the condition. As will be appreciated by those of ordinary skill in this art, the effective amount of a compound described herein may vary depending on such factors as the desired biological endpoint, the pharmacokinetics of the compound, the condition being treated, the mode of administration, and the age and health of the subject. An effective amount encompasses therapeutic and prophylactic treatment.

A “therapeutically effective amount” of a compound is an amount sufficient to provide a therapeutic benefit in the treatment of a condition or to delay or minimize one or more symptoms associated with the condition. A therapeutically effective amount of a compound means an amount of therapeutic agent, alone or in combination with other therapies, which provides a therapeutic benefit in the treatment of the condition. The term “therapeutically effective amount” can encompass an amount that improves overall therapy, reduces or avoids symptoms or causes of the condition, or enhances the therapeutic efficacy of another therapeutic agent.

A “prophylactically effective amount” of a compound is an amount sufficient to prevent a condition, or one or more symptoms associated with the condition or prevent its recurrence. A prophylactically effective amount of a compound means an amount of a therapeutic agent, alone or in combination with other agents, which provides a prophylactic benefit in the prevention of the condition. The term “prophylactically effective amount” can encompass an amount that improves overall prophylaxis or enhances the prophylactic efficacy of another prophylactic agent.

As used herein, the term “methyltransferase” represents transferase class enzymes that are able to transfer a methyl group from a donor molecule to an acceptor molecule, e.g., an amino acid residue of a protein or a nucleic base of a DNA molecule. Methytransferases typically use a reactive methyl group bound to sulfur in S-adenosyl methionine (SAM) as the methyl donor. In some embodiments, a methyltransferase described herein is a protein methyltransferase. In some embodiments, a methyltransferase described herein is a histone methyltransferase. Histone methyltransferases (HMT) are histone-modifying enzymes, (including histone-lysine N-methyltransferase and histone-arginine N-methyltransferase), that catalyze the transfer of one or more methyl groups to lysine and arginine residues of histone proteins. In certain embodiments, a methyltransferase described herein is a histone-arginine N-methyltransferase.

As generally described above, provided herein are compounds useful as PRMT5 inhibitors. In some embodiments, the present disclosure provides a compound of Formula (A):

or a pharmaceutically acceptable salt thereof, wherein:

represents a single or double bond;

R¹² is hydrogen, halogen, or optionally substituted C₁₋₃alkyl;

R¹³ is hydrogen, halogen, optionally substituted C₁₋₃alkyl, —NR^(A1)R^(A2), or —OR¹;

R^(A1) and R^(A2) are each independently hydrogen, optionally substituted C₁₋₃ alkyl, optionally substituted acyl, or a nitrogen protecting group, or R^(A1) and R^(A2) are taken together with the intervening nitrogen atom to form an optionally substituted 3-6 membered heterocyclic ring;

R¹ is hydrogen, R^(z), or —C(O)R^(z), wherein R^(z) is optionally substituted C₁₋₆ alkyl;

L is —N(R)C(O)—, —C(O)N(R)—, —N(R)C(O)N(R)—, —N(R)C(O)O—, or —OC(O)N(R)—;

each R is independently hydrogen or optionally substituted C₁₋₆ aliphatic;

Ar is a monocyclic or bicyclic aromatic ring having 0-4 heteroatoms independently selected from nitrogen, oxygen, and sulfur, wherein Ar is substituted with 0, 1, 2, 3, 4, or 5 R^(y) groups, as valency permits; or

Ar is a monocyclic or bicyclic heterocyclic ring having 1-4 heteroatoms independently selected from nitrogen, oxygen, and sulfur, wherein Ar is substituted with 0, 1, 2, 3, 4, or 5 R^(y) groups, as valency permits;

each R^(y) is independently selected from the group consisting of halo, —CN, —NO₂, optionally substituted aliphatic, optionally substituted carbocyclyl, optionally substituted aryl, optionally substituted heterocyclyl, optionally substituted heteroaryl, —OR^(A), —N(R^(B))₂, —SR^(A), —C(═O)R^(A), —C(O)OR^(A), —C(O)SR^(A), —C(O)N(R^(B))₂, —C(O)N(R^(B))N(R^(B))₂, —OC(O)R^(A), —OC(O)N(R^(B))₂, —NR^(B)C(O)R^(A), —NR^(B)C(O)N(R^(B))₂, —NR^(B)C(O)N(R^(B))N(R^(B))₂, —NR^(B)C(O)OR^(A), —SC(O)R^(A), —C(═NR^(B))R^(A), —C(═NNR^(B))R^(A), —C(═NOR^(A))R^(A), —C(═NR^(B))N(R^(B))₂, —NR^(B)C(═NR^(B))R^(B), —C(═S)R^(A), —C(═S)N(R^(B))₂, —NR^(B)C(═S)R^(A), —S(O)R^(A), —OS(O)₂R^(A), —SO₂R^(A), —NR^(B)SO₂R^(A), or —SO₂N(R^(B))₂;

each R^(A) is independently selected from the group consisting of hydrogen, optionally substituted aliphatic, optionally substituted carbocyclyl, optionally substituted heterocyclyl, optionally substituted aryl, and optionally substituted heteroaryl;

each R^(B) is independently selected from the group consisting of hydrogen, optionally substituted aliphatic, optionally substituted carbocyclyl, optionally substituted heterocyclyl, optionally substituted aryl, and optionally substituted heteroaryl, or two R^(B) groups are taken together with their intervening atoms to form an optionally substituted heterocyclic ring;

R⁵, R⁶, R⁷, and R⁸ are each independently hydrogen, halo, or optionally substituted aliphatic;

each R^(x) is independently selected from the group consisting of halo, —CN, optionally substituted aliphatic, —OR′, and —N(R″)₂;

R′ is hydrogen or optionally substituted aliphatic;

each R″ is independently hydrogen or optionally substituted aliphatic, or two R″ are taken together with their intervening atoms to form a heterocyclic ring; and

n is 0, 1, 2, 3, 4, 5, 6, 7, 8, 9, or 10, as valency permits.

In some embodiments, the provided compound is of a free base form. In some embodiments, the provided compound is in the form of a pharmaceutically acceptable salt as generally defined herein. In some embodiments, the provided compound is a hydrochloride salt thereof. In some embodiments, the provided compound is a tartrate salt thereof. In some embodiments, the provided compound is a monotartrate salt thereof. In some embodiments, the provided compound is a bitartrate salt thereof.

In some embodiments, the carbon attached to R¹² has (S)-stereochemistry. In some embodiments, the carbon attached to R¹² has (R)-stereochemistry. In some embodiments, the carbon attached to R¹³ has (S)-stereochemistry. In some embodiments, the carbon attached to R¹³ has (R)-stereochemistry.

As generally defined above, R¹² is hydrogen, halogen, or optionally substituted C₁₋₃alkyl. In certain embodiments, R¹² is hydrogen. In certain embodiments, R¹² is optionally substituted C₁₋₃alkyl, e.g., optionally substituted with halogen. In certain embodiments, R¹² is optionally substituted C₁alkyl, e.g., methyl or trifluoromethyl. In certain embodiments, R¹² is optionally substituted C₂ alkyl, e.g., ethyl. In certain embodiments, R¹² is optionally substituted C₃ alkyl, e.g., propyl. In certain embodiments, R¹² is fluoro, provided that R¹³ is not —OR¹. In certain embodiments, R¹² is chloro, provided that R¹³ is not —OR¹. In certain embodiments, R¹² is bromo, provided that R¹³ is not —OR¹. In certain embodiments, R¹² is iodo, provided that R¹³ is not —OR¹.

As generally defined above, R¹³ is hydrogen, halogen, optionally substituted C₁-3alkyl, —NR^(A1)R^(A2), or —OR¹. In certain embodiments, R¹³ is hydrogen. In certain embodiments, R¹³ is optionally substituted C₁₋₃alkyl, e.g., optionally substituted with halogen. In certain embodiments, R¹³ is optionally substituted C₁alkyl, e.g., methyl or trifluoromethyl. In certain embodiments, R¹³ is optionally substituted C₂ alkyl, e.g., ethyl. In certain embodiments, R¹³ is optionally substituted C₃ alkyl, e.g., propyl. In certain embodiments, R¹³ is fluoro. In certain embodiments, R¹³ is chloro. In certain embodiments, R¹³ is bromo. In certain embodiments, R¹³ is iodo.

In some embodiments, both R¹² and R¹³ are optionally substituted C₁₋₃alkyl. In some embodiments, R¹² is halogen e.g., fluoro, bromo, chloro, or iodo, provided that R¹³ is not —OR¹. In some embodiments, R¹³ is halogen e.g., fluoro, bromo, chloro, or iodo. In some embodiments, both R¹² and R¹³ are halogen e.g., fluoro, bromo, chloro, or iodo. In some embodiments, R¹² is halogen e.g., fluoro, bromo, chloro, or iodo and R¹³ is optionally substituted C₁₋₃alkyl. In some embodiments, R¹² is optionally substituted C₁₋₃alkyl and R¹³ is halogen e.g., fluoro, bromo, chloro, or iodo. In some embodiments, R¹³ is —OR¹. In some embodiments, R¹² is optionally substituted C₁₋₃alkyl and R¹³ is —OR¹. In some embodiments, R¹² is hydrogen and R¹³ is —OR¹. In some embodiments, R¹² is hydrogen and R¹³ optionally substituted C₁₋₃alkyl. In some embodiments, R¹² is optionally substituted C₁₋₃alkyl and R¹³ is hydrogen. In some embodiments, R¹² is halogen e.g., fluoro, bromo, chloro, or iodo and R¹³ is hydrogen. In some embodiments, R¹² is hydrogen and R¹³ is halogen e.g., fluoro, bromo, chloro, or iodo.

For example, in some embodiments of Formula (A), wherein R¹³ is hydrogen, the present disclosure provides a compound of Formula (A-1):

or a pharmaceutically acceptable salt thereof, wherein R⁵, R⁶, R⁷, R⁸, R^(x), R¹², n, L, and Ar are as described herein.

In some embodiments of Formula (A), wherein R¹² is hydrogen, the present disclosure provides a compound of Formula (A-2):

or a pharmaceutically acceptable salt thereof, wherein R⁵, R⁶, R⁷, R⁸, R^(x), R³, n, L, and Ar are as described herein.

In some embodiments of Formula (A), wherein both R¹² and R¹³ are hydrogen, the present disclosure provides a compound of Formula (A-3):

or a pharmaceutically acceptable salt thereof, wherein R⁵, R⁶, R⁷, R⁸, R^(x), n, L, and Ar are as described herein.

In some embodiments of Formula (A), wherein R¹³ is —OR¹, the present disclosure provides a compound of Formula (A-4):

or a pharmaceutically acceptable salt thereof, wherein R¹, R⁵, R⁶, R⁷, R⁸, R, R¹², n, L, and Ar are as described herein.

In some embodiments of Formula (A), wherein R¹³ is —OR¹, the present disclosure provides a compound of Formula (A-5):

or a pharmaceutically acceptable salt thereof, wherein R¹, R⁵, R⁶, R⁷, R⁸, R^(x), R¹², R^(A1), R^(A2), n L, and Ar are as described herein.

In some embodiments of Formula (A), wherein R¹² is hydrogen, and R¹³ is —OR¹, the present disclosure provides a compound of Formula (I):

or a pharmaceutically acceptable salt thereof, wherein R¹, R⁵, R⁶, R⁷, R⁸, R^(x), n, L, and Ar are as described herein.

In certain embodiments, a provided compound is of Formula (I-a):

or a pharmaceutically acceptable salt thereof, wherein R¹, R⁵, R⁶, R⁷, R⁸, R^(x), n, L, and Ar are as described herein.

In certain embodiments, a provided compound is of Formula (I-b):

or a pharmaceutically acceptable salt thereof, wherein R¹, R⁵, R⁶, R⁷, R⁸, R^(x), n, L, and Ar are as described herein.

In certain embodiments, a provided compound is of Formula (I-c):

or a pharmaceutically acceptable salt thereof, wherein R¹, R^(x), n, L, and Ar are as described herein.

In certain embodiments, a provided compound is of Formula (A-6):

or a pharmaceutically acceptable salt thereof, wherein R¹, R^(x), R¹², R¹³, n, L, and Ar are as described herein.

In certain embodiments, a provided compound is of Formula (I′):

or a pharmaceutically acceptable salt thereof, wherein R¹, R^(x), n, L, and Ar are as described herein.

In certain embodiments, a provided compound is of Formula (I′-a):

or a pharmaceutically acceptable salt thereof, wherein R¹, R^(x), n, L, and Ar are as described herein.

In certain embodiments, a provided compound is of Formula (I′-b):

or a pharmaceutically acceptable salt thereof, wherein R¹, R^(x), n, L, and Ar are as described herein.

In some embodiments of Formula (A), the present disclosure provides a compound of Formula (A-7):

or a pharmaceutically acceptable salt thereof, wherein R^(x), R¹², R¹³, n, and Ar are as described herein.

In certain embodiments, a provided compound is of Formula (II):

or a pharmaceutically acceptable salt thereof, wherein R¹, R^(x), n, and Ar are as described herein.

In certain embodiments, a provided compound is of Formula (II-a):

or a pharmaceutically acceptable salt thereof, wherein R¹, R^(x), n, and Ar are as described herein.

In certain embodiments, a provided compound is of Formula (II-b):

or a pharmaceutically acceptable salt thereof, wherein R¹, R^(x), n, and Ar are as described herein.

In some embodiments of Formula (A), the present disclosure provides a compound of Formula (A-8):

or a pharmaceutically acceptable salt thereof, wherein R¹², R¹³, and R^(y) are described herein.

In certain embodiments, a provided compound is of Formula (III):

or a pharmaceutically acceptable salt thereof, wherein R^(y) is as described herein.

In certain embodiments, a provided compound is of Formula (III-a):

or a pharmaceutically acceptable salt thereof, wherein R^(y) is as described herein.

In certain embodiments, a provided compound is of Formula (III-b):

or a pharmaceutically acceptable salt thereof, wherein R^(y) is as described herein.

In some embodiments of Formula (A), the present disclosure provides a compound of Formula (A-9):

or a pharmaceutically acceptable salt thereof, wherein R¹², R¹³, and R^(y) are described herein.

In some embodiments of Formula (A), the present disclosure provides a compound of Formula (A-9-a)

or a pharmaceutically acceptable salt thereof, wherein R¹³, and R^(y) are described herein.

In some embodiments of Formula (A), the present disclosure provides a compound of Formula (A-9-b):

or a pharmaceutically acceptable salt thereof, wherein R¹³, and R^(y) are described herein.

In some embodiments of Formula (A), the present disclosure provides a compound of Formula (A-9-c):

or a pharmaceutically acceptable salt thereof, wherein R¹³, and R^(y) are described herein.

In certain embodiments, a provided compound is of Formula (IV):

or a pharmaceutically acceptable salt thereof, wherein R^(y) is as described herein.

In certain embodiments, a provided compound is of Formula (IV-a):

or a pharmaceutically acceptable salt thereof, wherein R^(y) is as described herein.

In certain embodiments, a provided compound is of Formula (IV-b):

or a pharmaceutically acceptable salt thereof, wherein R^(y) is as described herein.

In some embodiments of Formula (A), the present disclosure provides a compound of Formula (A-10):

or a pharmaceutically acceptable salt thereof, wherein R¹², R¹³, and R^(y) are described herein.

In some embodiments of Formula (A), the present disclosure provides a compound of Formula (A-10-a):

or a pharmaceutically acceptable salt thereof, wherein R¹³, and R^(y) are described herein.

In some embodiments of Formula (A), the present disclosure provides a compound of Formula (A-10-b):

or a pharmaceutically acceptable salt thereof, wherein R¹³, and R^(y) are described herein.

In some embodiments of Formula (A), the present disclosure provides a compound of Formula (A-10-c):

or a pharmaceutically acceptable salt thereof, wherein R¹³, and R^(y) are described herein.

In certain embodiments, a provided compound is of Formula (V):

or a pharmaceutically acceptable salt thereof, wherein R^(y) is as described herein.

In certain embodiments, a provided compound is of Formula (V-a):

or a pharmaceutically acceptable salt thereof, wherein R^(y) is as described herein.

In certain embodiments, a provided compound is of Formula (V-b):

or a pharmaceutically acceptable salt thereof, wherein R^(y) is as described herein.

In some embodiments of Formula (A), the present disclosure provides a compound of Formula (A-11):

or a pharmaceutically acceptable salt thereof, wherein R¹², R¹³, and R^(y) are described herein.

In some embodiments of Formula (A), the present disclosure provides a compound of Formula (A-11-a):

or a pharmaceutically acceptable salt thereof, wherein R¹³, and R^(y) are described herein.

In some embodiments of Formula (A), the present disclosure provides a compound of Formula (A-11-b):

or a pharmaceutically acceptable salt thereof, wherein R¹³, and R^(y) are described herein.

In some embodiments of Formula (A), the present disclosure provides a compound of Formula (A-11-c):

or a pharmaceutically acceptable salt thereof, wherein R¹³, and R^(y) are described herein.

In certain embodiments, a provided compound is of Formula (VI):

or a pharmaceutically acceptable salt thereof, wherein R^(y) is as described herein.

In certain embodiments, a provided compound is of Formula (VI-a):

or a pharmaceutically acceptable salt thereof, wherein R^(y) is as described herein.

In certain embodiments, a provided compound is of Formula (VI-b):

or a pharmaceutically acceptable salt thereof, wherein R^(y) is as described herein.

In some embodiments of Formula (A), the present disclosure provides a compound of Formula (A-12):

or a pharmaceutically acceptable salt thereof, wherein R^(y) is described herein.

In some embodiments of Formula (A), the present disclosure provides a compound of Formula (A-12-a):

or a pharmaceutically acceptable salt thereof, wherein R¹³ and R^(y) is described herein.

In some embodiments of Formula (A), the present disclosure provides a compound of Formula (A-12-b):

or a pharmaceutically acceptable salt thereof, wherein R¹³ and R^(y) is described herein.

In some embodiments of Formula (A), the present disclosure provides a compound of Formula (A-12-c):

or a pharmaceutically acceptable salt thereof, wherein R¹³ and R^(y) is described herein.

In certain embodiments, a provided compound is of Formula (VII):

or a pharmaceutically acceptable salt thereof, wherein R^(y) is as described herein.

In certain embodiments, a provided compound is of Formula (VII-a):

or a pharmaceutically acceptable salt thereof, wherein R^(y) is as described herein.

In certain embodiments, a provided compound is of Formula (VII-b):

or a pharmaceutically acceptable salt thereof, wherein R^(y) is as described herein.

In some embodiments of Formula (A), the present disclosure provides a compound of Formula (A-13):

or a pharmaceutically acceptable salt thereof, wherein R¹², R¹³, and R^(y) are described herein.

In some embodiments of Formula (A), the present disclosure provides a compound of Formula (A-13-a):

or a pharmaceutically acceptable salt thereof, wherein R¹³, and R^(y) are described herein.

In some embodiments of Formula (A), the present disclosure provides a compound of Formula (A-13-b):

or a pharmaceutically acceptable salt thereof, wherein R¹³, and R^(y) are described herein.

In some embodiments of Formula (A), the present disclosure provides a compound of Formula (A-13-c):

or a pharmaceutically acceptable salt thereof, wherein R¹³, and R^(y) are described herein.

In certain embodiments, a provided compound is of Formula (VIII):

or a pharmaceutically acceptable salt thereof, wherein R^(y) is as described herein.

In certain embodiments, a provided compound is of Formula (VIII-a):

or a pharmaceutically acceptable salt thereof, wherein R^(y) is as described herein.

In certain embodiments, a provided compound is of Formula (VIII-b):

or a pharmaceutically acceptable salt thereof, wherein R^(y) is as described herein.

In some embodiments of Formula (A), the present disclosure provides a compound of Formula (A-14):

or a pharmaceutically acceptable salt thereof, wherein R¹², R¹³, and R^(y) are described herein.

In some embodiments of Formula (A), the present disclosure provides a compound of Formula (A-14-a):

or a pharmaceutically acceptable salt thereof, wherein R¹³, and R^(y) are described herein.

In some embodiments of Formula (A), the present disclosure provides a compound of Formula (A-14-b):

or a pharmaceutically acceptable salt thereof, wherein R¹³, and R^(y) are described herein.

In some embodiments of Formula (A), the present disclosure provides a compound of Formula (A-14-c):

or a pharmaceutically acceptable salt thereof, wherein R¹³, and R^(y) are described herein.

In certain embodiments, a provided compound is of Formula (IX):

or a pharmaceutically acceptable salt thereof, wherein R^(y) is as described herein.

In certain embodiments, a provided compound is of Formula (IX-a):

or a pharmaceutically acceptable salt thereof, wherein R^(y) is as described herein.

In certain embodiments, a provided compound is of Formula (IX-b):

or a pharmaceutically acceptable salt thereof, wherein R^(y) is as described herein.

In some embodiments of Formula (A), the present disclosure provides a compound of Formula (A-15):

or a pharmaceutically acceptable salt thereof, wherein R^(y) is described herein.

In some embodiments of Formula (A), the present disclosure provides a compound of Formula (A-15-a):

or a pharmaceutically acceptable salt thereof, wherein R¹³ and R^(y) is described herein.

In some embodiments of Formula (A), the present disclosure provides a compound of Formula (A-15-b):

or a pharmaceutically acceptable salt thereof, wherein R¹³ and R^(y) is described herein.

In some embodiments of Formula (A), the present disclosure provides a compound of Formula (A-15-c):

or a pharmaceutically acceptable salt thereof, wherein R¹³ and R^(y) is described herein.

In certain embodiments, a provided compound is of Formula (X):

or a pharmaceutically acceptable salt thereof, wherein R^(y) is as described herein.

In certain embodiments, a provided compound is of Formula (X-a):

or a pharmaceutically acceptable salt thereof, wherein R^(y) is as described herein.

In certain embodiments, a provided compound is of Formula (X-b):

or a pharmaceutically acceptable salt thereof, wherein R^(y) is as described herein.

In some embodiments of Formula (A), the present disclosure provides a compound of Formula (A-16):

or a pharmaceutically acceptable salt thereof, wherein R¹², R¹³, and R^(y) are described herein.

In some embodiments of Formula (A), the present disclosure provides a compound of Formula (A-16-a):

or a pharmaceutically acceptable salt thereof, wherein R¹³, and R^(y) are described herein.

In some embodiments of Formula (A), the present disclosure provides a compound of Formula (A-16-b):

or a pharmaceutically acceptable salt thereof, wherein R¹³, and R^(y) are described herein.

In some embodiments of Formula (A), the present disclosure provides a compound of Formula (A-16-c):

or a pharmaceutically acceptable salt thereof, wherein R¹³, and R^(y) are described herein.

In certain embodiments, a provided compound is of Formula (XI):

or a pharmaceutically acceptable salt thereof, wherein R^(y) is as described herein.

In certain embodiments, a provided compound is of Formula (XI-a):

or a pharmaceutically acceptable salt thereof, wherein R^(y) is as described herein.

In certain embodiments, a provided compound is of Formula (XI-b):

or a pharmaceutically acceptable salt thereof, wherein R^(y) is as described herein.

In some embodiments of Formula (A), the present disclosure provides a compound of Formula (A-17):

or a pharmaceutically acceptable salt thereof, wherein R¹², R¹³, and R^(y) are described herein.

In some embodiments of Formula (A), the present disclosure provides a compound of Formula (A-17-a):

or a pharmaceutically acceptable salt thereof, wherein R¹³ and R^(y) are described herein.

In some embodiments of Formula (A), the present disclosure provides a compound of Formula (A-17-b):

or a pharmaceutically acceptable salt thereof, wherein R¹³ and R^(y) are described herein.

In some embodiments of Formula (A), the present disclosure provides a compound of Formula (A-17-c):

or a pharmaceutically acceptable salt thereof, wherein R¹³ and R^(y) are described herein.

In certain embodiments, a provided compound is of Formula (XII):

or a pharmaceutically acceptable salt thereof, wherein R^(y) is as described herein.

In certain embodiments, a provided compound is of Formula (XII-a):

or a pharmaceutically acceptable salt thereof, wherein R^(y) is as described herein.

In certain embodiments, a provided compound is of Formula (XII-b):

or a pharmaceutically acceptable salt thereof, wherein R^(y) is as described herein.

In some embodiments,

represents a single bond. In some embodiments,

represents a single bond.

As defined generally above, R¹ is hydrogen, R^(z), or —C(O)R^(z), wherein R^(z) is optionally substituted C₁₋₆ alkyl. In certain embodiments, R¹ is hydrogen. In some embodiments, R¹ is optionally substituted C₁₋₆ alkyl. In certain embodiments, R¹ is unsubstituted C₁₋₆ alkyl. In certain embodiments, R¹ is methyl, ethyl, or propyl. In some embodiments, R¹ is —C(O)R^(z), wherein R^(z) is optionally substituted C₁₋₆ alkyl. In certain embodiments, R¹ is —C(O)R^(z), wherein R^(z) is unsubstituted C₁₋₆ alkyl. In certain embodiments, R¹ is acetyl.

As defined generally above, R⁵, R⁶, R⁷, and R⁸ are each independently hydrogen, halo, or optionally substituted aliphatic. In some embodiments, R⁵, R⁶, R⁷, and R⁸ are hydrogen. In some embodiments, R⁶, R⁷, and R⁸ are hydrogen, and R⁵ is optionally substituted aliphatic. In some embodiments, R⁶, R⁷, and R⁸ are hydrogen, and R⁵ is optionally substituted C₁₋₆ aliphatic. In some embodiments, R⁶, R⁷, and R⁸ are hydrogen, and R⁵ is optionally substituted C₁₋₃ aliphatic. In some embodiments, R⁶, R⁷, and R⁸ are hydrogen, and R⁵ is methyl. In some embodiments, R⁵, R⁷, and R⁸ are hydrogen, and R⁶ is optionally substituted aliphatic. In some embodiments, R⁵, R⁷, and R⁸ are hydrogen, and R⁶ is optionally substituted C₁₋₆ aliphatic. In some embodiments, R⁵, R⁷, and R⁸ are hydrogen, and R⁶ is optionally substituted C₁₋₃ aliphatic. In some embodiments, R⁵, R⁷, and R⁸ are hydrogen, and R⁶ is methyl. In some embodiments, R⁵, R⁶, and R⁸ are hydrogen, and R⁷ is optionally substituted aliphatic. In some embodiments, R⁵, R⁶, and R⁸ are hydrogen, and R⁷ is optionally substituted C₁₋₆ aliphatic. In some embodiments, R⁵, R⁶, and R⁸ are hydrogen, and R⁷ is optionally substituted C₁₋₃ aliphatic. In some embodiments, R⁵, R⁶, and R⁸ are hydrogen, and R⁷ is methyl. In some embodiments, R⁵, R⁶, and R⁷ are hydrogen, and R⁸ is optionally substituted aliphatic. In some embodiments, R⁵, R⁶, and R⁷ are hydrogen, and R⁸ is optionally substituted C₁₋₆ aliphatic. In some embodiments, R⁵, R⁶, and R⁷ are hydrogen, and R⁸ is optionally substituted C₁₋₃ aliphatic. In some embodiments, R⁵, R⁶, and R⁷ are hydrogen, and R⁸ is methyl. In some embodiments, R⁵ is hydrogen. In some embodiments, R⁵ is halo. In certain embodiments, R⁵ is fluoro. In some embodiments, R⁵ is optionally substituted C₁₋₆ aliphatic. In some embodiments, R⁵ is optionally substituted C₁₋₃ alkyl. In certain embodiments, R⁵ is methyl. In some embodiments, R⁶ is hydrogen. In some embodiments, R⁶ is halo. In certain embodiments, R⁶ is fluoro. In some embodiments, R⁶ is optionally substituted C₁₋₆ aliphatic. In some embodiments, R⁶ is optionally substituted C₁₋₃ alkyl. In certain embodiments, R⁶ is methyl. In some embodiments, R⁷ is hydrogen. In some embodiments, R⁷ is halo. In certain embodiments, R⁷ is fluoro. In some embodiments, R⁷ is optionally substituted C₁₋₆ aliphatic. In some embodiments, R⁷ is optionally substituted C₁₋₃ alkyl. In certain embodiments, R⁷ is methyl. In some embodiments, R⁸ is hydrogen. In some embodiments, R⁸ is halo. In certain embodiments, R⁸ is fluoro. In some embodiments, R⁸ is optionally substituted C₁₋₆ aliphatic. In some embodiments, R⁸ is optionally substituted C₁₋₃ alkyl. In certain embodiments, R⁸ is methyl.

As defined generally above, L is —N(R)C(O)—, —C(O)N(R)—, —N(R)C(O)N(R)—, —N(R)C(O)O—, or —OC(O)N(R)—, wherein R is as described herein. In some embodiments, L is —N(R)C(O)—. In some embodiments, L is —NHC(O)—. In some embodiments, L is —N(C₁₋₆ alkyl)C(O)—. In some embodiments, L is —N(CH₃)C(O)—. In some embodiments, L is —C(O)N(R)—. In some embodiments, L is —C(O)NH—. In some embodiments, L is —C(O)N(C₁₋₆ alkyl)-. In some embodiments, L is —C(O)N(CH₃)-. In some embodiments, L is —N(R)C(O)N(R)—. In some embodiments, L is —NHC(O)NH—. In some embodiments, L is —NHC(O)N(R)—. In some embodiments, L is —N(R)C(O)NH—. In some embodiments, L is —N(CH₃)C(O)N(R)—. In some embodiments, L is —N(R)C(O)N(CH₃)-. In some embodiments, L is —N(CH₃)C(O)N(CH₃)-. In some embodiments, L is —N(R)C(O)O—. In some embodiments, L is —NHC(O)O—. In some embodiments, L is —N(C₁₋₆ alkyl)C(O)O—. In some embodiments, L is —N(CH₃)C(O)O—. In some embodiments, L is —OC(O)N(R)—. In some embodiments, L is —OC(O)NH—. In some embodiments, L is —OC(O)N(C₁₋₆ alkyl)-. In some embodiments, L is —OC(O)N(CH₃)-.

As defined generally above, each R is independently hydrogen or optionally substituted C₁₋₆ aliphatic. In certain embodiments, R is hydrogen. In some embodiments, R is optionally substituted C₁₋₆ aliphatic. In some embodiments, R is substituted C₁₋₆ aliphatic. In some embodiments, R is unsubstituted C₁₋₆ aliphatic. In some embodiments, R is optionally substituted C₁₋₆ alkyl. In some embodiments, R is substituted C₁₋₆ alkyl. In some embodiments, R is unsubstituted C₁₋₆ alkyl. In some embodiments, R is methyl, ethyl, or propyl.

For avoidance of confusion, though Ar is sometimes used to denote the element argon, as used herein Ar denotes a monocyclic or bicyclic aromatic ring having 0-4 heteroatoms independently selected from nitrogen, oxygen, and sulfur, wherein Ar is substituted with 0, 1, 2, 3, 4, or 5 R^(y) groups, as valency permits, and various embodiments thereof as described herein, or Ar is a monocyclic or bicyclic heterocyclic ring having 1-4 heteroatoms independently selected from nitrogen, oxygen, and sulfur, wherein Ar is substituted with 0, 1, 2, 3, 4, or 5 R^(y) groups, as valency permits, and various embodiments thereof as described herein. In certain embodiments, Ar is unsubstituted. In certain embodiments, Ar is substituted with one or two R^(y) groups. In certain embodiments, Ar is substituted with one R^(y) group. In certain embodiments, Ar is substituted with two R^(y) groups. In certain embodiments, Ar is substituted with three R^(y) groups. In certain embodiments, Ar is substituted with four R^(y) groups. In certain embodiments, Ar is substituted with five R^(y)groups.

In certain embodiments, Ar is phenyl substituted with 0, 1, 2, 3, 4, or 5 R^(y) groups. In certain embodiments, Ar is phenyl substituted with one or two R^(y) groups. In certain embodiments, Ar is unsubstituted phenyl. In certain embodiments, Ar is phenyl substituted with one R^(y) group. In certain embodiments, Ar is phenyl substituted with two R^(y) groups. In certain embodiments, Ar is phenyl substituted with three R^(y) groups. In certain embodiments, Ar is phenyl substituted with four R^(y) groups. In certain embodiments, Ar is phenyl substituted with five R^(y) groups.

In certain embodiments, Ar is heteroaryl substituted with 0, 1, 2, 3, 4, or 5 R^(y)groups, as valency permits. In certain embodiments, Ar is a 5- to 6-membered heteroaryl having 1-3 heteroatoms independently selected from nitrogen, oxygen, and sulfur, and is substituted with 0, 1, 2, 3, or 4 R^(y) groups. In certain embodiments, Ar is an unsubstituted 5-to 6-membered heteroaryl having 1-3 heteroatoms independently selected from nitrogen, oxygen, and sulfur. In certain embodiments, Ar is a 5- to 6-membered heteroaryl having 1-3 heteroatoms independently selected from nitrogen, oxygen, and sulfur, and is substituted with one or two R^(y) groups. In certain embodiments, Ar is a 5- to 6-membered heteroaryl having 1-3 heteroatoms independently selected from nitrogen, oxygen, and sulfur, and is substituted with one R^(y) group. In certain embodiments, Ar is a 5-membered heteroaryl having 1-3 heteroatoms independently selected from nitrogen, oxygen, and sulfur (e.g., furanyl, thienyl, pyrrolyl, oxazolyl, isoxazolyl, thiazolyl, imidazolyl, pyrazolyl, isothiazolyl, triazolyl, oxadiazolyl, thiadiazolyl), and is substituted with 0, 1, 2, or 3 R^(y) groups. In certain embodiments, Ar is a 6-membered heteroaryl having 1-3 nitrogens (e.g., pyridyl, pyrimidyl, pyridazinyl, pyrazinyl, triazinyl), and is substituted with 0, 1, 2, 3, or 4 R^(y) groups. In certain embodiments, Ar is pyridyl, and is substituted with 0, 1, 2, 3, or 4 R^(y) groups. In certain embodiments, Ar is pyridyl, and is substituted with one R^(y) group. In certain embodiments, Ar is pyridyl, and is substituted with two R^(y) groups. In certain embodiments, Ar is a 6-membered heteroaryl having two nitrogens (e.g., pyrimidyl, pyridazinyl, pyrazinyl), and is substituted with 0, 1, 2, or 3 R^(y) groups. In certain embodiments, Ar is a 6-membered heteroaryl having two nitrogens (e.g., pyrimidyl, pyridazinyl, pyrazinyl), and is substituted with one R^(y) group. In certain embodiments, Ar is a 6-membered heteroaryl having two nitrogens (e.g., pyrimidyl, pyridazinyl, pyrazinyl), and is substituted with two R^(y) groups.

In certain embodiments, Ar is a bicyclic aromatic ring having 0-4 heteroatoms independently selected from nitrogen, oxygen, and sulfur, wherein Ar is substituted with 0, 1, 2, 3, or 4 R^(y) groups. In certain embodiments, Ar is an 8- to 12-membered bicyclic aromatic ring having 0-4 heteroatoms independently selected from nitrogen, oxygen, and sulfur, wherein Ar is substituted with 0, 1, 2, 3, or 4 R^(y) groups. In certain embodiments, Ar is an unsubstituted bicyclic aromatic ring having 0-4 heteroatoms independently selected from nitrogen, oxygen, and sulfur. In certain embodiments, Ar is a bicyclic aromatic ring having 0-4 heteroatoms independently selected from nitrogen, oxygen, and sulfur, wherein Ar is substituted with one or two R^(y) groups. In certain embodiments, Ar is a bicyclic aromatic ring having 0-4 heteroatoms independently selected from nitrogen, oxygen, and sulfur, wherein Ar is substituted with one R^(y) group. In certain embodiments, Ar is a bicyclic aromatic ring having 0-4 heteroatoms independently selected from nitrogen, oxygen, and sulfur, wherein Ar is substituted with two R^(y) groups. In certain embodiments, Ar is a bicyclic aromatic ring having 0-4 heteroatoms independently selected from nitrogen, oxygen, and sulfur, wherein Ar is substituted with three R^(y) groups. In certain embodiments, Ar is a bicyclic aromatic ring having 0-4 heteroatoms independently selected from nitrogen, oxygen, and sulfur, wherein Ar is substituted with four R^(y) groups. In certain embodiments, Ar is a bicyclic aromatic ring having 0-4 heteroatoms independently selected from nitrogen, oxygen, and sulfur, wherein Ar is substituted with five R^(y) groups. In certain embodiments, Ar is naphthalene substituted with 0, 1, 2, 3, 4, or 5 R^(y) groups.

In certain embodiments, Ar is an 8- to 10-membered bicyclic heteroaryl having 1-4 heteroatoms independently selected from nitrogen, oxygen, and sulfur, wherein Ar is substituted with 0, 1, 2, 3, or 4 R^(y) groups. In certain embodiments, Ar is a 9-membered bicyclic heteroaryl having 1-3 heteroatoms independently selected from nitrogen, oxygen, and sulfur (e.g., indolyl, isoindolyl, indazolyl, benzotriazolyl, benzothiophenyl, isobenzothiophenyl, benzofuranyl, benzoisofuranyl, benzimidazolyl, benzoxazolyl, benzisoxazolyl, benzoxadiazolyl, benzthiazolyl, benzisothiazolyl, benzthiadiazolyl, indolizinyl), wherein Ar is substituted with 0, 1, 2, 3, 4, or 5 R^(y) groups. In certain embodiments, Ar is a 10-membered bicyclic heteroaryl having 1-3 heteroatoms independently selected from nitrogen, oxygen, and sulfur (e.g., naphthyridinyl, quinolinyl, isoquinolinyl, quinoxalinyl, quinazolinyl), wherein Ar is substituted with 0, 1, 2, 3, 4, or 5 R^(y)groups. In certain embodiments, Ar is selected from the group consisting of quinoline, benzimidazole, benzopyrazole, quinoxaline, tetrahydroquinoline, tetrahydroisoquinoline, naphthalene, tetrahydronaphthalene, 2,3-dihydrobenzo[b][1,4]dioxine, isoindole, 2H-benzo[b][1,4]oxazin-3(4H)-one, 3,4-dihydro-2H-benzo [b][1,4]oxazine, and quinoxalin-2(1H)-one, wherein Ar is substituted with 0, 1, 2, 3, or 4 R^(y) groups. In some embodiments, Ar is quinoline, wherein Ar is substituted with 0, 1, 2, 3, or 4 R^(y) groups.

As generally defined above, in certain embodiments, Ar is a monocyclic or bicyclic heterocyclic ring having 1-4 heteroatoms independently selected from nitrogen, oxygen, and sulfur, wherein Ar is substituted with 0, 1, 2, 3, 4, or 5 R^(y) groups, as valency permits. In certain embodiments, Ar is a monocyclic heterocyclic ring, e.g., a monocyclic 5-membered or 6-membered heterocyclic ring substituted with 0, 1, 2, 3, 4, or 5 R^(y) groups, as valency permits. In certain embodiments, Ar is a bicyclic heterocyclic ring, e.g., a 6,6-bicyclic or 5,6-bicyclic heterocyclic ring substituted with 0, 1, 2, 3, 4, or 5 R^(y) groups, as valency permits. In certain embodiments, Ar is a 5,6-bicyclic heterocyclic ring wherein the point of attachment is on the 6-membered ring. In certain embodiments, wherein Ar is a 5,6-bicyclic heterocyclic ring, Ar is an optionally substituted dihydroimidazo pyrimidinyl ring.

As defined generally above, each R^(y) is independently selected from the group consisting of halo, —CN, —NO₂, optionally substituted aliphatic, optionally substituted carbocyclyl, optionally substituted aryl, optionally substituted heterocyclyl, optionally substituted heteroaryl, —OR^(A), —N(R^(B))₂, —SR^(A), —C(═O)R^(A), —C(O)OR^(A), —C(O)SR^(A), —C(O)N(R^(B))₂, —C(O)N(R^(B))N(R^(B))₂, —OC(O)R^(A), —OC(O)N(R^(B))₂, —NR^(B)C(O)R^(A), —NR^(B)C(O)N(R^(B))₂, —NR^(B)C(O)N(R^(B))N(R^(B))₂, —NR^(B)C(O)OR^(A), —SC(O)R^(A), —C(═NR^(B))R^(A), —C(═NNR^(B))R^(A), —C(═NOR^(A))R^(A), —C(═NR^(B))N(R^(B))₂, —NR^(B)C(═NR^(B))R^(B), —C(═S)R^(A), —C(═S)N(R^(B))₂, —NR^(B)C(═S)R^(A), —S(O)R^(A), —OS(O)₂R^(A), —SO₂R^(A), —NR^(B)SO₂R^(A), and —SO₂N(R^(B))₂, wherein R^(A) and R^(B) are described herein.

In some embodiments, at least one R^(y) is halo. In certain embodiments, at least one R^(y) is fluoro. In certain embodiments, at least one R^(y) is chloro. In some embodiments, at least one R^(y) is —CN. In some embodiments, at least one R^(y) is —OR^(A), wherein R^(A) is optionally substituted aliphatic. In some embodiments, at least one R^(y) is —OR^(A), wherein R^(A) is unsubstituted C₁₋₆ alkyl. In certain embodiments, at least one R^(y) is methoxy, ethoxy, or propoxy. In certain embodiments, at least one R^(y) is methoxy. In some embodiments, at least one R^(y) is —OR^(A), wherein R^(A) is substituted C₁₋₆ alkyl. In certain embodiments, at least one R^(y) is —OCH₂CH₂N(CH₃)₂. In some embodiments, at least one R^(y) is —OR^(A), wherein R^(A) is optionally substituted heterocyclyl. In some embodiments, at least one R^(y) is —OR^(A), wherein R^(A) is an optionally subsituted 4- to 7-membered heterocyclyl having 1-2 heteroatoms independently selected from nitrogen, oxygen, and sulfur. In some embodiments, at least one R^(y) is —OR^(A), wherein R^(A) is oxetanyl, tetrahydrofuranyl, or tetrahydropyranyl. In some embodiments, at least one R^(y) is —N(R^(B))₂, wherein each R^(B) is independently hydrogen, optionally substituted alkyl, optionally substituted heterocyclyl, optionally substituted carbocyclyl, or optionally substituted aryl. In some embodiments, at least one R^(y) is —NHR^(B), wherein each R^(B) is independently hydrogen, optionally substituted alkyl, optionally substituted heterocyclyl, optionally substituted carbocyclyl, or optionally substituted aryl. In some embodiments, at least one R^(y) is —N(CH₃)R^(B), wherein each R^(B) is independently hydrogen, optionally substituted alkyl, optionally substituted heterocyclyl, optionally substituted carbocyclyl, or optionally substituted aryl. In some embodiments, at least one R^(y) is —N(R^(B))₂, wherein each R^(B) is independently hydrogen or C₁₋₆ alkyl. In some embodiments, at least one R^(y) is —NHR^(B). In some embodiments, at least one R^(y) is —N(C₁₋₆ alkyl)₂, —NH(C₁₋₆ alkyl), or —NH₂. In certain embodiments, at least one R^(y) is —NH₂. In certain embodiments, at least one R^(y) is —NHCH₃. In certain embodiments, at least one R^(y) is —N(CH₃)₂. In some embodiments, at least one R^(y) is —N(R^(B))₂, —NHR^(B), or —N(CH₃)R^(B), wherein at least one R^(B) is -(optionally substituted C₁₋₆ alkyl)-(C₁₋₆ alkyl heterocyclyl). In some embodiments, at least one R^(y) is —N(R^(B))₂ or —NHR^(B), wherein at least one R^(B) is optionally substituted heterocyclyl. In some embodiments, at least one R^(y) is —N(R^(B))₂ or —NHR^(B), wherein at least one R^(B) is an optionally subsituted 4- to 7-membered heterocyclyl having 1-2 heteroatoms independently selected from nitrogen, oxygen, and sulfur. In some embodiments, at least one R^(y) is —N(R^(B))₂ or —NHR^(B), wherein at least one R^(B) is oxetanyl, tetrahydropyranyl, or tetrahydrofuranyl. In some embodiments, at least one R^(y) is —N(R^(B))₂ or —NHR^(B), wherein at least one R^(B) is optionally substituted piperidinyl or optionally substituted piperazinyl.

In some embodiments, at least one R^(y) is optionally substituted aliphatic. In certain embodiments, at least one R^(y) is substituted aliphatic. In certain embodiments, at least one R^(y) is unsubstituted aliphatic. In some embodiments, at least one R^(y) is optionally substituted C₁₋₆ alkyl. In certain embodiments, at least one R^(y) is unsubstituted C₁₋₆ alkyl. In certain embodiments, at least one R^(y) is substituted C₁₋₆ alkyl. In certain embodiments, at least one R^(y) is methyl, ethyl, or propyl. In certain embodiments, at least one R^(y) is methyl. In certain embodiments, at least one R^(y) is —CF₃, CHF₂, or CH₂F. In certain embodiments, at least one R^(y) is C₁₋₆ alkyl substituted with aryl, heteroaryl, or heterocyclyl. In certain embodiments, at least one R^(y) is benzyl. In certain embodiments, at least one R^(y) is —(C₁₋₆ alkyl)-aryl. In certain embodiments, at least one R^(y) is —(C₁₋₆ alkyl)-heteroaryl. In certain embodiments, at least one R^(y) is —(C₁₋₆ alkyl)-heterocyclyl. In certain embodiments, at least one R^(y) is —CH₂-aryl. In certain embodiments, at least one R^(y) is —CH₂-heteroaryl. In certain embodiments, at least one R^(y) is —CH₂-heterocyclyl.

In some embodiments, at least one R^(y) is —C(O)N(R^(B))₂. In certain embodiments, at least one R^(y) is —C(O)NHR^(B). In certain embodiments, at least one R^(y) is —C(O)NH₂. In certain embodiments, at least one R^(y) is —C(O)N(R^(B))₂, wherein the R^(B) groups are taken together with their intervening atoms to form an optionally substituted 5- to 6-membered heterocyclyl. In certain embodiments, at least one R^(y) is —C(O)N(R^(B))₂, wherein the R^(B) groups are taken together with their intervening atoms to form an optionally substituted morpholinyl.

In some embodiments, at least one R^(y) is —SO₂N(R^(B))₂. In certain embodiments, at least one R^(y) is —SO₂NHR^(B). In certain embodiments, at least one R^(y) is —SO₂NH₂. In certain embodiments, at least one R^(y) is —SO₂N(R^(B))₂, wherein neither R^(B) is hydrogen. In certain embodiments, at least one R^(y) is —SO₂NH(C₁₋₆ alkyl) or —SO₂N(C₁₋₆ alkyl)₂. In certain embodiments, at least one R^(y) is —SO₂N(CH₃)₂. In certain embodiments, at least one R^(y) is —SO₂N(R^(B))₂, wherein the R^(B) groups are taken together with their intervening atoms to form an optionally substituted 5- to 6-membered heterocyclyl. In certain embodiments, at least one R^(y) is —SO₂-morpholinyl. In certain embodiments, at least one R^(y) is —SO₂-piperidinyl, —SO₂-piperazinyl, or —SO₂-piperidinyl.

In some embodiments, at least one R^(y) is —SO₂R^(A). In some embodiments, at least one R^(y) is —SO₂R^(A), wherein R^(A) is optionally substituted aliphatic. In some embodiments, at least one R^(y) is —SO₂(C₁₋₆ alkyl). In some embodiments, at least one R^(y) is —SO₂CH₃. In some embodiments, at least one R^(y) is —C(O)R^(A). In some embodiments, at least one R^(y) is —C(O)R^(A), wherein R^(A) is optionally substituted aliphatic. In some embodiments, at least one R^(y) is —C(O)(C₁₋₆ alkyl). In some embodiments, at least one R^(y) is —C(O)CH₃.

In some embodiments, at least one R^(y) is —N(R^(B))C(O)R^(A). In certain embodiments, at least one R^(y) is —NHC(O)R^(A). In certain embodiments, at least one R^(y) is —NHC(O)(C₁₋₆ alkyl). In certain embodiments, at least one R^(y) is —NHC(O)CH₃.

In some embodiments, at least one R^(y) is —N(R^(B))SO₂R^(A). In some embodiments, at least one R^(y) is —NHSO₂R^(A). In some embodiments, at least one R^(y) is —N(C₁₋₆ alkyl)SO₂R^(A). In certain embodiments, at least one R^(y) is —NHSO₂(C₁₋₆ alkyl) or —N(C₁₋₆ alkyl)SO₂(C₁₋₆ alkyl). In certain embodiments, at least one R^(y) is —NHSO₂CH₃. In certain embodiments, at least one R^(y) is —N(CH₃)SO₂CH₃.

In some embodiments, at least one R^(y) is optionally substituted heterocyclyl, optionally substituted carbocyclyl, optionally substituted aryl, or optionally substituted heteroaryl. In certain embodiments, at least one R^(y) is an optionally substituted 5- to 6-membered heterocyclyl having 1-2 heteroatoms independently selected from nitrogen, oxygen, and sulfur. In certain embodiments, at least one R^(y) is an optionally substituted 5-membered heterocyclyl having one heteroatom selected from nitrogen, oxygen, and sulfur. In certain embodiments, at least one R^(y) is optionally substituted pyrrolidinyl. In certain embodiments, at least one R^(y) is pyrroldinyl, hydroxypyrrolidinyl, or methylpyrrolidinyl. In certain embodiments, at least one R^(y) is an optionally substituted 6-membered heterocyclyl having 1-2 heteroatoms independently selected from nitrogen, oxygen, and sulfur. In certain embodiments, at least one R^(y) is an optionally substituted 6-membered heterocyclyl having one heteroatom selected from nitrogen, oxygen, and sulfur. In certain embodiments, at least one R^(y) is optionally substituted piperidinyl. In certain embodiments, at least one R^(y) is an optionally substituted 6-membered heterocyclyl having two heteroatoms independently selected from nitrogen, oxygen, and sulfur. In certain embodiments, at least one R^(y) is optionally substituted piperdinyl, optionally substituted piperazinyl, or optionally substituted morpholinyl. In certain embodiments, at least one R^(y) is morpholinyl, tetrahydropyranyl, piperidinyl, methylpiperidinyl, piperazinyl, methylpiperazinyl, acetylpiperazinyl, methylsulfonylpiperazinyl, aziridinyl, or methylaziridinyl. In some embodiments, at least one R^(y) is an optionally substituted 5- to 6-membered heteroaryl having 1-3 heteroatoms independently selected from nitrogen, oxygen, and sulfur. In certain embodiments, at least one R^(y) is an optionally substituted 5-membered heteroaryl having 1-3 heteroatoms independently selected from nitrogen, oxygen, and sulfur. In certain embodiments, at least one R^(y) is an optionally substituted 5-membered heteroaryl having one heteroatom selected from nitrogen, oxygen, and sulfur. In certain embodiments, at least one R^(y) is an optionally substituted 5-membered heteroaryl having two heteroatoms independently selected from nitrogen, oxygen, and sulfur. In certain embodiments, at least one R^(y) is an optionally substituted 6-membered heteroaryl having 1-3 nitrogens. In certain embodiments, at least one R^(y) is an optionally substituted pyrazolyl. In certain embodiments, at least one R^(y) is an optionally substituted imidazolyl. In certain embodiments, at least one R^(y) is an optionally substituted pyridyl. In certain embodiments, at least one R^(y) is an optionally substituted pyrimidyl. In certain embodiments, at least one R^(y) is pyrazolyl, methylpyrazolyl, imidazolyl, or methylimidazolyl.

In some embodiments, R^(y) is —OR^(A). In some embodiments, R^(y) is —OR^(A), wherein R^(A) is optionally substituted heterocyclyl. In some embodiments, R^(y) is —OR^(A), wherein R^(A) is optionally substituted heteroaryl. In some embodiments, R^(y) is —OR^(A), wherein R^(A) is optionally substituted cycloalkyl. In some embodiments, R^(y) is —N(R^(B))₂. In some embodiments, R^(y) is —NHR^(B). In some embodiments, R^(y) is —NHR^(B), wherein R^(B) is optionally substituted heterocyclyl. In some embodiments, R^(y) is —NHR^(B), wherein R^(B) is optionally substituted heteroaryl. In some embodiments, R^(y) is —NHR^(B), wherein R^(B) is optionally substituted cycloalkyl. In some embodiments, R^(y) is —N(R^(B))₂, wherein one R^(B) is optionally substituted heterocyclyl, and the other R^(B) is C₁₋₄ alkyl. In some embodiments, R^(y) is —N(R^(B))₂, wherein one R^(B) is optionally substituted heteroaryl, and the other R^(B) is C₁₋₄ alkyl. In some embodiments, R^(y) is —N(R^(B))₂, wherein one R^(B) is optionally substituted cycloalkyl, and the other R^(B) is C₁₋₄ alkyl.

In some embodiments of Formula (A), when L is —C(O)N(R)—; R¹² is hydrogen; and R¹³ is hydrogen or —OR₁; then Ar is not optionally substituted five-membered heteroaryl, optionally substituted five-membered heterocyclyl, an optionally substituted bicyclic aromatic ring, an optionally substituted bicyclic heterocyclic ring, or optionally substituted phenyl. In some embodiments of Formula (A), when L is —C(O)N(R)—; R¹² is hydrogen; and R¹³ is hydrogen or —OR₁, then Ar is substituted six-membered heteroaryl with at least one R^(y) at the beta-position of the point of the attachment to L. In some embodiments of Formula (A), when L is —C(O)NH—; R¹² is hydrogen; and R¹³ is hydrogen or —OH, then Ar is substituted six-membered heteroaryl with at least one R^(y) at the beta-position of the point of the attachment to L. In some embodiments of Formula (A), when L is —C(O)N(R)—; R¹² is hydrogen; R¹³ is hydrogen or —OR₁; and Ar is substituted six-membered heteroaryl, then R^(y) is not halo (e.g., F or Cl) or optionally substituted alkyl. In some embodiments of Formula (A), when L is —C(O)N(R)—; R¹² is hydrogen; and R¹³ is hydrogen or —OR₁; and Ar is substituted six-membered heteroaryl, then R^(y) is not halo (e.g., F or Cl) or C₁₋₃ alkyl (e.g., methyl, ethyl, n-propyl, or iso-propyl). In some embodiments of Formula (A), when L is —C(O)NH—; R¹² is hydrogen; and R¹³ is hydrogen or —OR₁; and Ar is substituted six-membered heteroaryl, then R^(y) is not halo (e.g., F or Cl) or C₁₋₃ alkyl (e.g., methyl, ethyl, n-propyl, or iso-propyl). In some embodiments of Formula (A), when L is —C(O)NH—; R¹² is hydrogen; and R¹³ is hydrogen or —OH; and Ar is substituted six-membered heteroaryl, then R^(y) is not halo (e.g., F or Cl) or C₁₋₃ alkyl (e.g., methyl, ethyl, n-propyl, or iso-propyl). In some embodiments of Formula (A), when L is —C(O)N(R)—; R¹² is hydrogen; and R¹³ is hydrogen or —OR₁; and Ar is optionally substituted pyridine or pyrimidine, then R^(y) is not halo (e.g., F or Cl) or optionally substituted alkyl. In some embodiments of Formula (A), when L is —C(O)N(R)—; R¹² is hydrogen; and R¹³ is hydrogen or —OR₁; and Ar is optionally substituted pyridine or pyrimidine, then R^(y) is not halo (e.g., F or Cl) or C₁₋₃ alkyl (e.g., methyl, ethyl, n-propyl, or iso-propyl). In some embodiments of Formula (A), when L is —C(O)NH—; R¹² is hydrogen; and R¹³ is hydrogen or —OR₁; and Ar is optionally substituted pyridine or pyrimidine, then R^(y) is not halo (e.g., F or Cl) or C₁₋₃ alkyl (e.g., methyl, ethyl, n-propyl, or iso-propyl). In some embodiments of Formula (A), when L is —C(O)NH—; R¹² is hydrogen; and R¹³ is hydrogen or —OH; and Ar is optionally substituted pyridine or pyrimidine, then R^(y) is not halo (e.g., F or Cl) or C₁₋₃ alkyl (e.g., methyl, ethyl, n-propyl, or iso-propyl). In some embodiments of Formula (A), when L is —C(O)NH—; R¹² is hydrogen; and R¹³ is hydrogen or —OH; and Ar is pyridine or pyrimidine substituted with one R^(y), then R^(y) is not halo (e.g., F or Cl) or C₁₋₃ alkyl (e.g., methyl, ethyl, n-propyl, or iso-propyl).

In some embodiments of Formula (A), when L is —C(O)N(R)—; R¹² is hydrogen; R¹³ is hydrogen or —OR₁; and Ar is monocyclic or bicyclic heteroaryl, then Ar is substituted with 1, 2, 3, 4, or 5 R^(y), as valency permits, and each instance of R^(y) is not halo (e.g., F or Cl), optionally substituted alkyl (e.g., methyl), optionally substituted heteroaryl (e.g., thiazolyl, isoxazolyl, or thiadiazolyl), optionally substituted carbocyclyl, or —SO₂N(R^(B))₂, wherein R^(B) is as generally defined herein. In some embodiments of Formula (A), when L is —C(O)N(R)—; R¹² is hydrogen; R¹³ is hydrogen or —OR₁; and Ar is monocyclic heteroaryl, then Ar is substituted with 1, 2, 3, 4, or 5 R^(y), as valency permits, and each instance of R^(y) is not halo (e.g., F or Cl) or optionally substituted alkyl (e.g., methyl or ethyl).

In some embodiments of Formula (A), when L is —C(O)N(R)—; R¹² is hydrogen; R¹³ is —OR₁; and Ar is substituted six-membered heteroaryl, then R^(y) is not halo (e.g., F or Cl) or optionally substituted alkyl. In some embodiments of Formula (A), when L is —C(O)NH—; R¹² is hydrogen; R¹³ is —OH; and Ar is substituted six-membered heteroaryl, then R^(y) is not halo (e.g., F or Cl) or optionally substituted alkyl. In some embodiments of Formula (A), when L is —C(O)N(R)—; R¹² is hydrogen; R¹³ is —OR₁; and Ar is substituted five-membered heteroaryl, then each R^(y) is not halo (e.g., F or Cl) or optionally substituted alkyl. In some embodiments of Formula (A), when L is —C(O)N(R)—; R¹² and R¹³ are both hydrogen; and Ar is six-membered heteroaryl, then Ar is substituted with 1, 2, 3, 4, or 5 R^(y), as valency permits, and each instance of R^(y) is not halo, optionally substituted alkyl, or optionally substituted heteroaryl.

In some embodiments of Formula (I), when L is —C(O)N(R)—, then Ar is not optionally substituted five-membered heteroaryl, optionally substituted five-membered heterocyclyl, an optionally substituted bicyclic aromatic ring, an optionally substituted bicyclic heterocyclic ring, or optionally substituted phenyl. In some embodiments of Formula (I), when L is —C(O)NH—, then Ar is not optionally substituted five-membered heteroaryl, optionally substituted five-membered heterocyclyl, an optionally substituted bicyclic aromatic ring, an optionally substituted bicyclic heterocyclic ring, or optionally substituted phenyl. In some embodiments of Formula (I), when L is —C(O)N(R)—, then Ar is six-membered heteroaryl with at least one R^(y) substituted at the beta-position of the point of the attachment to L. In some embodiments of Formula (I), when L is —C(O)NH— and R¹ is hydrogen, then Ar is six-membered heteroaryl with at least one R^(y) substituted at the beta-position of the point of the attachment to L.

In some embodiments of Formula (I), when L is —C(O)N(R)— and Ar is substituted six-membered heteroaryl, then each instance of R^(y) is not halo (e.g., F or Cl) or optionally substituted alkyl. In some embodiments of Formula (I), when L is —C(O)N(R)— and Ar is substituted six-membered heteroaryl, then each instance of R^(y) is not halo (e.g., F or Cl) or C₁₋₃ alkyl (e.g., methyl, ethyl, n-propyl, or iso-propyl). In some embodiments of Formula (I), when L is —C(O)NH—; R¹ is hydrogen; and Ar is substituted six-membered heteroaryl, then each instance of R^(y) is not halo (e.g., F or Cl) or C₁₋₃ alkyl (e.g., methyl, ethyl, n-propyl, or iso-propyl). In some embodiments of Formula (A), when L is —C(O)N(R)— and R¹ is hydrogen, then Ar is substituted pyridine or pyrimidine, then each instance of R^(y) is not halo (e.g., F or Cl) or optionally substituted alkyl. In some embodiments of Formula (A), when L is —C(O)N(R)— and R¹ is hydrogen, then Ar is substituted pyridine or pyrimidine and R^(y) is not halo (e.g., F or Cl) or C₁₋₃ alkyl (e.g., methyl, ethyl, n-propyl, or iso-propyl). In some embodiments of Formula (A), when L is —C(O)NH— and R¹ is hydrogen, then Ar is substituted pyridine or pyrimidine and R^(y) is not halo (e.g., F or Cl) or C₁₋₃ alkyl (e.g., methyl, ethyl, n-propyl, or iso-propyl).

In some embodiments of Formula (I), when L is —C(O)N(R)— and Ar is monocyclic or bicyclic heteroaryl, then Ar is substituted with 1, 2, 3, 4, or 5 R^(y), as valency permits, and each instance of R^(y) is not halo (e.g., F or Cl) or optionally substituted alkyl. In some embodiments of Formula (I), when L is —C(O)N(R)—, and Ar is six-membered heteroaryl, then Ar is substituted with 1, 2, 3, 4, or 5 R^(y), as valency permits, and each instance of R^(y) is not halo or optionally substituted alkyl. In some embodiments of Formula (I), when L is —C(O)NH—, and Ar is six-membered heteroaryl, then Ar is substituted with 1, 2, 3, 4, or 5 R^(y), as valency permits, and each instance of R^(y) is not halo or optionally substituted alkyl. In some embodiments of Formula (I), when L is —C(O)N(R)— and Ar is pyridine or pyrimidine; then Ar is substituted with 1, 2, 3, 4, or 5 R^(y), as valency permits, and each instance of R^(y) is not halo or optionally substituted alkyl. In some embodiments of Formula (I), when L is —C(O)NH— and Ar is pyridine or pyrimidine; then Ar is substituted with 1, 2, 3, 4, or 5 R^(y), as valency permits, and each instance of R^(y) is not halo or optionally substituted alkyl. In some embodiments of Formula (I), when L is —C(O)N(R)— and Ar is pyridine, then Ar is substituted with 1, 2, 3, 4, or 5 R^(y), as valency permits, and each instance of R^(y) is not halo or optionally substituted alkyl. In some embodiments of Formula (I), when L is —C(O)N(R)— and Ar is pyridine substituted with one R^(y), and R^(y) is not halo or C₁₋₃ alkyl (e.g., methyl, ethyl, n-propyl, or iso-propyl). In some embodiments of Formula (I), when L is —C(O)N(R)— and Ar is pyrimidine substituted with one R^(y), then R^(y) is not halo or optionally substituted alkyl (e.g., methyl). In some embodiments of Formula (I), when L is —C(O)N(R)— and Ar is pyrimidine substituted with one R^(y), then R^(y) is not optionally substituted alkyl. In some embodiments of Formula (I), when L is —C(O)N(R)— and Ar is pyrimidine substituted with one R^(y), then R^(y) is not C₁₋₃ alkyl.

In certain embodiments, Ar is selected from the group consisting of:

In certain embodiments, Ar is selected from the group consisting of:

In certain embodiments, Ar is selected from the group consisting of:

In certain embodiments, Ar is selected from the group consisting of:

In some embodiments, Ar is selected from the group consisting of:

In some embodiments, Ar is selected from the group consisting of:

In certain embodiments, Ar is selected from the group consisting of:

In certain embodiments, Ar is a 5,6-fused bicyclic heteroaryl ring system such as one of the following:

wherein the point of attachment can be any carbon or nitrogen atom, as valency permits, and the ring may be substituted with 0, 1, 2, 3, 4, or 5 R^(y) groups, as valency permits.

In some embodiments, Ar is selected from the group consisting of:

each of which may be optionally substituted with 1, 2, 3, 4, or 5 R^(y) groups as valency permits.

In certain embodiments, Ar is an optionally substituted heterocyclyl (i.e., an optionally substituted dihydroimidazo pyrimidinyl) selected from the group consisting of:

In certain embodiments, Ar is not any one of the following formulae:

wherein R^(y) is as generally defined herein.

As defined generally above, each R^(x) is independently selected from the group consisting of halo, —CN, optionally substituted aliphatic, —OR′, and —N(R″)₂. In certain embodiments, at least one R^(x) is halo. In certain embodiments, at least one R^(x) is fluoro. In certain embodiments, at least one R^(x) is —CN. In certain embodiments, at least one R^(x) is optionally substituted aliphatic. In certain embodiments, at least one R^(X) is optionally substituted C₁₋₆ alkyl. In certain embodiments, at least one R^(x) is methyl. In certain embodiments, at least one R^(x) is —CF₃. In certain embodiments, at least one R^(x) is —OR′ or —N(R″)₂. In certain embodiments, R^(x) is not —OR′ or —N(R″)₂. In certain embodiments, at least one R^(x) is —OCH₃. In certain embodiments, R^(x) is not —OCH₃.

As is generally understood from the above disclosure, the ring system:

is a fused bicyclic ring system, i.e., a phenyl ring fused to a nitrogen containing ring, wherein the point of attachment to the parent moiety is on the nitrogen, and wherein the fused bicyclic system is optionally substituted with (R^(x))_(n), wherein n and R^(x) are as defined herein. As is generally understood, each of the atoms of the phenyl ring and the nitrogen-containing ring can be independently optionally substituted with R^(x), as valency permits.

In certain embodiments, the fused bicyclic ring system is optionally substituted with one or more R^(x), with the proviso that when the nitrogen-containing ring is substituted at one of the positions alpha to the nitrogen, R^(x) is not-C(═O)R^(x1), wherein R^(x1) is optionally substituted aliphatic, optionally substituted carbocyclyl, optionally substituted aryl, optionally substituted heterocyclyl, optionally substituted heteroaryl, —OR^(A), —N(R^(B))₂, or —SR^(A), wherein R^(A) and R^(B) are as generally defined herein. In certain embodiments, the nitrogen-containing ring does not comprise an R^(x) substituent. In certain embodiments, only atoms of the phenyl ring are optionally substituted with one or more R^(X).

In certain embodiments, the nitrogen-containing ring is optionally substituted, and the fused bicyclic ring system is of the formula:

wherein R^(x) is as defined herein, and n1 is 0, 1, 2, 3, or 4.

Thus, one of ordinary skill in the art will appreciate that an R^(x) group can be attached anywhere on the tetrahydroisoquinoline or dihydroisoquinoline ring. In certain embodiments, an R^(x) group is attached to the phenyl of the tetrahydroisoquinoline or dihydroisoquinoline ring. In certain embodiments, an R^(x) group is attached to the tetrahydropyridine or dihydropyridine portion of the tetrahydroisoquinoline or dihydroisoquinoline ring. In certain embodiments, R^(x) groups are attached to both the phenyl portion and the tetrahydropyridine (or dihydropyridine) portion of the tetrahydroisoquinoline (or dihydroisoquinoline) ring. See, for example, the structures shown below:

In certain embodiments, a provided compound is of Formula (XIV):

or a pharmaceutically acceptable salt thereof.

As defined generally above, n is 0, 1, 2, 3, 4, 5, 6, 7, 8, 9, or 10. In certain embodiments, n is 0. In certain embodiments, n is 1. In certain embodiments, n is 2.

In certain embodiments, a provided compound is of Formula (XV), (XVI), (XVII), or (XVIII):

or a pharmaceutically acceptable salt thereof, wherein each R^(y) for Formula (XV), (XVI), (XVII), or (XVIII) is independently as described herein.

In some embodiments of Formula (XV), (XVI), (XVII), or (XVIII), it is understood that when the nitrogen-containing heteroaryl moiety has only one substituent R^(y), R^(y) is not halo (e.g., F or Cl) or optionally substituted alkyl. In some embodiments of Formula (XV), (XVI), (XVII), or (XVIII), when the nitrogen-containing heteroaryl moiety has only one substituent R^(y), R^(y) is not halo (e.g., F or Cl) or C₁₋₃ alkyl (e.g. methyl, ethyl, n-propyl, or iso-propyl). In some embodiments of Formula (XV), (XVI), (XVII), or (XVIII), when the nitrogen-containing heteroaryl has only one substituent R^(y), R^(y) is —N(R^(B))₂, wherein R^(B) is as generally defined herein. In some embodiments of Formula (XV), (XVI), (XVII), or (XVIII), when the nitrogen-containing heteroaryl has only one substituent R^(y), R^(y) is —N(R^(B))₂, and at least one R^(B) is optionally substituted heterocyclyl. In some embodiments of Formula (XV), (XVI), (XVII), or (XVIII), when the nitrogen-containing heteroaryl has only one substituent R^(y), R^(y) is —NHR^(B), wherein R^(B) is as generally defined herein. In some embodiments of Formula (XV), (XVI), (XVII), or (XVIII), when the nitrogen-containing heteroaryl has only one substituent R^(y), R^(y) is —NHR^(B), wherein R^(B) is optionally substituted heterocyclyl.

In certain embodiments, a provided compound is of Formula (XV-a), (XVI-a), (XVII-a), or (XVIII-a):

or a pharmaceutically acceptable salt thereof, wherein R^(y) for Formula (XV-a), (XVI-a), (XVII-a), or (XVIII-a) is as generally described herein. In some embodiments, e.g. for Formula (XV-a), (XVI-a), (XVII-a), or (XVIII-a), R^(y) is —OR^(A), wherein R^(A) is optionally substituted alkyl, optionally substituted carbocyclyl, optionally substituted heterocyclyl, optionally substituted aryl, or optionally substituted heteroaryl. In some embodiments, e.g. for Formula (XV-a), (XVI-a), (XVII-a), or (XVIII-a), R^(y) is —OR^(A), wherein R^(A) is -(optionally substituted alkyl)-(optionally substituted carbocyclyl), -(optionally substituted alkyl)-(optionally substituted heterocyclyl), or -(optionally substituted alkyl)-(optionally substituted heteroaryl). In some embodiments, e.g. for Formula (XV-a), (XVI-a), (XVII-a), or (XVIII-a), R^(y) is —OR^(A), wherein R^(A) is optionally substituted heterocyclyl. In some embodiments, e.g. for Formula (XV-a), (XVI-a), (XVII-a), or (XVIII-a), R^(y) is —OR^(A), wherein R^(A) is optionally substituted heteroaryl. In some embodiments, e.g. for Formula (XV-a), (XVI-a), (XVII-a), or (XVIII-a), R is —OR^(A), wherein R^(A) is optionally substituted carbocyclyl. In some embodiments, e.g. for Formula (XV-a), (XVI-a), (XVII-a), or (XVIII-a), R^(y) is —N(R^(B))₂, wherein R^(B) is hydrogen, optionally substituted alkyl, optionally substituted carbocyclyl, optionally substituted heterocyclyl, optionally substituted aryl, or optionally substituted heteroaryl. In some embodiments, e.g. for Formula (XV-a), (XVI-a), (XVII-a), or (XVIII-a), R^(y) is —NHR^(B). In some embodiments, e.g. for Formula (XV-a), (XVI-a), (XVII-a), or (XVIII-a), R^(y) is —NHR^(B), wherein R^(B) is optionally substituted alkyl, optionally substituted carbocyclyl, optionally substituted heterocyclyl, optionally substituted aryl, or optionally substituted heteroaryl. In some embodiments, e.g. for Formula (XV-a), (XVI-a), (XVII-a), or (XVIII-a), R^(y) is —NHR^(B), wherein R^(B) is -(optionally substituted alkyl)-(optionally substituted carbocyclyl)-, -(optionally substituted alkyl)-(optionally substituted heterocyclyl)-, or -(optionally substituted alkyl)-(optionally substituted heteroaryl)-. In some embodiments, e.g. for Formula (XV-a), (XVI-a), (XVII-a), or (XVIII-a), R^(y) is —NHR^(B), wherein R^(B) is optionally substituted heterocyclyl. In some embodiments, e.g. for Formula (XV-a), (XVI-a), (XVII-a), or (XVIII-a), R is —NHR^(B), wherein R^(B) is optionally substituted heteroaryl. In some embodiments, e.g. for Formula (XV-a), (XVI-a), (XVII-a), or (XVIII-a), R^(y) is —NHR^(B), wherein R^(B) is optionally substituted cycloalkyl. In some embodiments, e.g. for Formula (XV-a), (XVI-a), (XVII-a), or (XVIII-a), R^(y) is —N(CH₃)R^(B). In some embodiments, e.g. for Formula (XV-a), (XVI-a), (XVII-a), or (XVIII-a), R^(y) is —N(CH₃)R^(B), wherein R^(B) is optionally substituted alkyl, optionally substituted carbocyclyl, optionally substituted heterocyclyl, optionally substituted aryl, or optionally substituted heteroaryl. In some embodiments, e.g. for Formula (XV-a), (XVI-a), (XVII-a), or (XVIII-a), R^(y) is —N(CH₃)R^(B), wherein R^(B) is -(optionally substituted alkyl)-(optionally substituted carbocyclyl)-,-(optionally substituted alkyl)-(optionally substituted heterocyclyl)-, or -(optionally substituted alkyl)-(optionally substituted heteroaryl)-. In some embodiments, e.g. for Formula (XV-a), (XVI-a), (XVII-a), or (XVIII-a), R^(y) is —N(R^(B))₂, wherein one R^(B) is optionally substituted heterocyclyl, and the other R^(B) is C₁₋₄ alkyl. In some embodiments, e.g. for Formula (XV-a), (XVI-a), (XVII-a), or (XVIII-a), R^(y) is —N(R^(B))₂, wherein one R^(B) is optionally substituted heteroaryl, and the other R^(B) is C₁₋₄ alkyl. In some embodiments, e.g. for Formula (XV-a), (XVI-a), (XVII-a), or (XVIII-a), R^(y) is —N(R^(B))₂, wherein one R^(B) is optionally substituted cycloalkyl, and the other R^(B) is C₁₋₄ alkyl.

In certain embodiments of Formula (XV-a), wherein R^(y) is —N(R^(B))₂, provided is a compound of Formula (XV-a-1):

or a pharmaceutically acceptable salt thereof, wherein R^(B) is as generally defined herein. In certain embodiments, at least one R^(B) is an optionally substituted carbocyclic ring or optionally substituted heterocyclic ring, e.g., a 4- to 6-membered optionally substituted carbocyclic ring or a 4- to 6-membered optionally substituted heterocyclic ring.

In certain embodiments of Formula (XV-a-1), wherein at least one R^(B) is a hydrogen, provided is a compound of Formula (XV-a-2):

or a pharmaceutically acceptable salt thereof, wherein R^(B) is as generally defined herein. In certain embodiments of Formula (XV-a-2), R^(B) is an optionally substituted carbocyclic ring or optionally substituted heterocyclic ring. In certain embodiments of Formula (XV-a-2), R^(B) is an optionally substituted carbocyclic ring, e.g., a 4- to 6-membered optionally substituted carbocyclic ring. In certain embodiments of Formula (XV-a-2), R^(B) is an optionally substituted heterocyclic ring, e.g., or a 4- to 6-membered optionally substituted heterocyclic ring.

In certain embodiments of Formula (XV-a-2), wherein R^(B) is an optionally substituted heterocyclic ring, provided is a compound of Formula (XV-a-3):

or a pharmaceutically acceptable salt thereof, wherein each instance of a and b is independently 1 or 2, and X is —C(R^(XC))₂-, —O—, —S—, or —NR^(XN)—, wherein each instance of R^(XC) is independently hydrogen, optionally substituted alkyl, optionally substituted carbocyclyl, optionally substituted heterocyclyl, optionally substituted aryl, or optionally substituted heteroaryl; R^(XN) is independently hydrogen, optionally substituted alkyl, optionally substituted carbocyclyl, optionally substituted heterocyclyl, optionally substituted aryl, optionally substituted heteroaryl, —C(═O)R^(XA), or a nitrogen protecting group; R^(XA) is optionally substituted alkyl, optionally substituted carbocyclyl, optionally substituted heterocyclyl, optionally substituted aryl, or optionally substituted heteroaryl. In certain embodiments, a and b are both 1. In certain embodiments, a and b are both 2. In certain embodiments, X is —O—. In certain embodiments, X is —NR^(XN)—, wherein R^(XN) is as generally defined above. In certain embodiments, X is —NR^(XN)—, wherein R^(XN) is optionally substituted alkyl, —C(═O)R^(XA) or a nitrogen protecting group. In certain embodiments, X is —NR^(XN)—, wherein R^(XN) is —C(═O)R^(XA), wherein R^(XA) is optionally substituted alkyl or optionally substituted carbocyclyl. In certain embodiments, X is —NR^(XN)—, wherein R^(XN) is —C(═O)R^(XA), wherein R^(XA) is methyl, ethyl, n-propyl, iso-propyl, cyclopropyl, or cyclobutyl. In certain embodiments, a and b are each independently 1 or 2; and X is —O— or —NR^(XN)—, wherein R^(XN) is as generally defined above. In certain embodiments, a and b are each independently 1 or 2; and X is —O— or —NC(═O)R^(XA), wherein R^(XA) is as generally defined above. In certain embodiments, a and b are both 1; and X is —O— or —NR^(XN)—, wherein R^(XN) is as generally defined above. In certain embodiments, a and b are both 1; and X is —O— or —NC(═O)R^(XA), wherein R^(XA) is as generally defined above. In certain embodiments, a and b are both 1; and X is —O— or —NC(═O)CH₃. In certain embodiments, a and b are both 1; and X is —O—. In certain embodiments, a and b are both 2; and X is —O— or —NC(═O)CH₃. In certain embodiments, a and b are both 2; and X is —NC(═O)CH₃.

In certain embodiments of Formula (XV-a-3), wherein a and b are 2, provided is a compound of Formula (XV-a-4):

or a pharmaceutically acceptable salt thereof, wherein X is —C(R^(XC))₂—, —O—, —S—, or —NR^(XN)—; each instance of R^(XC) is independently hydrogen, optionally substituted alkyl, optionally substituted carbocyclyl, optionally substituted heterocyclyl, optionally substituted aryl, or optionally substituted heteroaryl; R^(XN) is independently hydrogen, optionally substituted alkyl, optionally substituted carbocyclyl, optionally substituted heterocyclyl, optionally substituted aryl, optionally substituted heteroaryl, —C(═O)R^(XA), or a nitrogen protecting group; R^(XA) is optionally substituted alkyl, optionally substituted carbocyclyl, optionally substituted heterocyclyl, optionally substituted aryl, or optionally substituted heteroaryl. In certain embodiments, X is —O—. In certain embodiments, X is —NR^(XN)—, wherein R^(XN) is as generally defined above. In certain embodiments, X is —NR^(XN)—, wherein R^(XN) is optionally substituted alkyl, —C(═O)R^(XA), or a nitrogen protecting group. In certain embodiments, X is —NR^(N)—, wherein R^(XN) is —C(═O)R^(XA), wherein R^(XA) is optionally substituted alkyl or optionally substituted carbocyclyl. In certain embodiments, X is —NR^(XN)—, wherein R^(XN) is —C(═O)R^(XA) wherein R^(XA) is methyl, ethyl, n-propyl, iso-propyl, cyclopropyl, or cyclobutyl. In certain embodiments, X is —NC(═O)CH₃.

In certain embodiments of Formula (XV-a-4), wherein X is —NR^(XN)—, provided is a compound of Formula (XV-a-5):

or a pharmaceutically acceptable salt thereof, wherein R^(XN) is independently hydrogen, optionally substituted alkyl, optionally substituted carbocyclyl, optionally substituted heterocyclyl, optionally substituted aryl, optionally substituted heteroaryl, —C(═O)R^(XA), or a nitrogen protecting group; R^(XA) is optionally substituted alkyl, optionally substituted carbocyclyl, optionally substituted heterocyclyl, optionally substituted aryl, or optionally substituted heteroaryl. In certain embodiments, R^(XN) is optionally substituted alkyl, —C(═O)R^(XA), or a nitrogen protecting group. In certain embodiments, R^(XN) is —C(═O)R^(XA) wherein R^(XA) is optionally substituted alkyl or optionally substituted carbocyclyl. In certain embodiments, R^(x)N is —C(═O)R^(XA), wherein R^(XA) is methyl, ethyl, n-propyl, iso-propyl, cyclopropyl, or cyclobutyl. In certain embodiments, R^(XN) is —C(═O)R^(XA), wherein R^(XA) is methyl.

In certain embodiments of Formula (XV-a-5), wherein —NR^(x)— is —C(═O)R^(XA) provided is a compound of Formula (XV-a-6):

or a pharmaceutically acceptable salt thereof, wherein R^(XA) is optionally substituted alkyl, optionally substituted carbocyclyl, optionally substituted heterocyclyl, optionally substituted aryl, or optionally substituted heteroaryl. In certain embodiments, R^(XA) is optionally substituted alkyl or optionally substituted carbocyclyl. In certain embodiments, R^(XA) is methyl, ethyl, n-propyl, iso-propyl, cyclopropyl, or cyclobutyl. In certain embodiments, R^(XA) is methyl.

In certain embodiments of Formula (XVII-a), wherein R^(y) is —N(R^(B))₂, provided is a compound of Formula (XVII-a-1):

or a pharmaceutically acceptable salt thereof, wherein R^(B) is as generally defined herein. In certain embodiments, at least one R^(B) is an optionally substituted carbocyclic ring or optionally substituted heterocyclic ring, e.g., a 4- to 6-membered optionally substituted carbocyclic ring or a 4- to 6-membered optionally substituted heterocyclic ring.

In certain embodiments of Formula (XVII-a-1), wherein at least one R^(B) is a hydrogen, provided is a compound of Formula (XVII-a-2):

or a pharmaceutically acceptable salt thereof, wherein R^(B) is an optionally substituted carbocyclic ring or optionally substituted heterocyclic ring. In certain embodiments of Formula (XV-a-2), R^(B) is an optionally substituted carbocyclic ring, e.g., a 4- to 6-membered optionally substituted carbocyclic ring. In certain embodiments of Formula (XV-a-2), R^(B) is an optionally substituted heterocyclic ring, e.g., or a 4- to 6-membered optionally substituted heterocyclic ring.

In certain embodiments of Formula (XVII-a-2), wherein R^(B) is an optionally substituted heterocyclic ring, provided is a compound of Formula (XVII-a-3):

or a pharmaceutically acceptable salt thereof, wherein each instance of a and b is independently 1 or 2, and X is —C(R^(XC))₂-, —O—, —S—, or —NR^(N)—, wherein each instance of R^(XC) is independently hydrogen, optionally substituted alkyl, optionally substituted carbocyclyl, optionally substituted heterocyclyl, optionally substituted aryl, or optionally substituted heteroaryl; R^(XN) is independently hydrogen, optionally substituted alkyl, optionally substituted carbocyclyl, optionally substituted heterocyclyl, optionally substituted aryl, optionally substituted heteroaryl, —C(═O)R^(XA), or a nitrogen protecting group; R^(XA) is optionally substituted alkyl, optionally substituted carbocyclyl, optionally substituted heterocyclyl, optionally substituted aryl, or optionally substituted heteroaryl. In certain embodiments, a and b are both 1. In certain embodiments, a and b are both 2. In certain embodiments, X is —O—. In certain embodiments, X is —NR^(N)—, wherein R^(XN) is as generally defined above. In certain embodiments, X is —NR^(N)—, wherein R^(XN) is optionally substituted alkyl, —C(═O)R^(XA) or a nitrogen protecting group. In certain embodiments, X is —NR^(XN)—, wherein R^(XN) is —C(═O)R^(XA), wherein R^(XA) is optionally substituted alkyl or optionally substituted carbocyclyl. In certain embodiments, X is —NR^(XN)—, wherein R^(XN) is —C(═O)R^(XA), wherein R^(XA) is methyl, ethyl, n-propyl, iso-propyl, cyclopropyl, or cyclobutyl. In certain embodiments, a and b are each independently 1 or 2; and X is —O— or —NR^(XN)—, wherein R^(XN) is as generally defined above. In certain embodiments, a and b are each independently 1 or 2; and X is —O— or —NC(═O)R^(XA), wherein R^(XA) is as generally defined above. In certain embodiments, a and b are both 1; and X is —O— or —NR^(XN)—, wherein R^(XN) is as generally defined above. In certain embodiments, a and b are both 1; and X is —O— or —NC(═O)R^(XA), wherein R^(XA) is as generally defined above. In certain embodiments, a and b are both 1; and X is —O— or —NC(═O)CH₃. In certain embodiments, a and b are both 1; and X is —O—. In certain embodiments, a and b are both 2; and X is —O— or —NC(═O)CH₃. In certain embodiments, a and b are both 2; and X is —NC(═O)CH₃.

In certain embodiments of Formula (XVII-a-3), wherein a and b are 1, provided is a compound of Formula (XVII-a-4):

or a pharmaceutically acceptable salt thereof, wherein X is —C(R^(XC))₂—, —O—, —S—, or —NR^(XN), wherein each instance of R^(XC) is independently hydrogen, optionally substituted alkyl, optionally substituted carbocyclyl, optionally substituted heterocyclyl, optionally substituted aryl, or optionally substituted heteroaryl; R^(XN) is independently hydrogen, optionally substituted alkyl, optionally substituted carbocyclyl, optionally substituted heterocyclyl, optionally substituted aryl, optionally substituted heteroaryl, —C(═O)R^(XA), or a nitrogen protecting group; R^(XA) is optionally substituted alkyl, optionally substituted carbocyclyl, optionally substituted heterocyclyl, optionally substituted aryl, or optionally substituted heteroaryl. In certain embodiments, X is —O—. In certain embodiments, X is —NR^(XN)—, wherein R^(XN) is as generally defined above. In certain embodiments, X is —NR^(XN)—, wherein R^(XN) is optionally substituted alkyl, —C(═O)R^(XA), or a nitrogen protecting group. In certain embodiments, X is —NR^(XN)—, wherein R^(XN) is —C(═O)R^(XA), wherein R^(XA) is optionally substituted alkyl or optionally substituted carbocyclyl. In certain embodiments, X is —NR^(XN)—, wherein R^(XN) is —C(═O)R^(XA), wherein R^(XA) is methyl, ethyl, n-propyl, iso-propyl, cyclopropyl, or cyclobutyl. In certain embodiments, X is —NC(═O)CH₃.

In certain embodiments of Formula (XVII-a-4), wherein X is —NR^(XN)—, provided is a compound of Formula (XVII-a-5):

or a pharmaceutically acceptable salt thereof, wherein R^(XN) is independently hydrogen, optionally substituted alkyl, optionally substituted carbocyclyl, optionally substituted heterocyclyl, optionally substituted aryl, optionally substituted heteroaryl, —C(═O)R^(XA), or a nitrogen protecting group; R^(XA) is optionally substituted alkyl, optionally substituted carbocyclyl, optionally substituted heterocyclyl, optionally substituted aryl, or optionally substituted heteroaryl. In certain embodiments, R^(XN) is optionally substituted alkyl, —C(═O)R^(XA), or a nitrogen protecting group. In certain embodiments, R^(XN) is —C(═O)R^(XA) wherein R^(XA) is optionally substituted alkyl or optionally substituted carbocyclyl. In certain embodiments, R^(XN) is —C(═O)R^(XA), wherein R^(XA) is methyl, ethyl, n-propyl, iso-propyl, cyclopropyl, or cyclobutyl. In certain embodiments, R^(XN) is —C(═O)R^(XA), wherein R^(XA) is methyl.

In certain embodiments of Formula (XVII-a-5), wherein —NR^(XN)— is —C(═O)R^(XA) provided is a compound of Formula (XVII-a-6):

or a pharmaceutically acceptable salt thereof, wherein R^(XA) is optionally substituted alkyl, optionally substituted carbocyclyl, optionally substituted heterocyclyl, optionally substituted aryl, or optionally substituted heteroaryl. In certain embodiments, R^(XA) is optionally substituted alkyl or optionally substituted carbocyclyl. In certain embodiments, R^(XA) is methyl, ethyl, n-propyl, iso-propyl, cyclopropyl, or cyclobutyl. In certain embodiments, R^(XA) is methyl.

In certain embodiments of Formula (XVII-a-4), wherein X is —NR^(XN)—, provided is a compound of Formula (XVII-a-7):

or a pharmaceutically acceptable salt thereof.

In certain embodiments of Formula (XVII-a-3), wherein a and b are 2, provided is a compound of Formula (XVII-a-8):

or a pharmaceutically acceptable salt thereof, wherein X is —C(R^(XC))₂-, —O—, —S—, or —NR^(XN), wherein each instance of R^(XC) is independently hydrogen, optionally substituted alkyl, optionally substituted carbocyclyl, optionally substituted heterocyclyl, optionally substituted aryl, or optionally substituted heteroaryl; R^(XN) is independently hydrogen, optionally substituted alkyl, optionally substituted carbocyclyl, optionally substituted heterocyclyl, optionally substituted aryl, optionally substituted heteroaryl, —C(═O)R^(XA), or a nitrogen protecting group; R^(XA) is optionally substituted alkyl, optionally substituted carbocyclyl, optionally substituted heterocyclyl, optionally substituted aryl, or optionally substituted heteroaryl. In certain embodiments, X is —O—. In certain embodiments, X is —NR^(XN)—, wherein R^(XN) is as generally defined above. In certain embodiments, X is —NR^(XN)—, wherein R^(XN) is optionally substituted alkyl, —C(═O)R^(XA), or a nitrogen protecting group. In certain embodiments, X is —NR^(XN)—, wherein R^(XN) is —C(═O)R^(A), wherein R^(XA) is optionally substituted alkyl or optionally substituted carbocyclyl. In certain embodiments, X is —NR^(XN)—, wherein R^(XN) is —C(═O)R^(XA), wherein R^(XA) is methyl, ethyl, n-propyl, iso-propyl, cyclopropyl, or cyclobutyl. In certain embodiments, X is —NC(═O)CH₃.

In certain embodiments of Formula (XVII-a-8), wherein X is —NR^(XN)—, provided is a compound of Formula (XVII-a-9):

or a pharmaceutically acceptable salt thereof, wherein R^(XN) is independently hydrogen, optionally substituted alkyl, optionally substituted carbocyclyl, optionally substituted heterocyclyl, optionally substituted aryl, optionally substituted heteroaryl, —C(═O)R^(XA), or a nitrogen protecting group; R^(XA) is optionally substituted alkyl, optionally substituted carbocyclyl, optionally substituted heterocyclyl, optionally substituted aryl, or optionally substituted heteroaryl. In certain embodiments, R^(XN) is optionally substituted alkyl, —C(═O)R^(XA), or a nitrogen protecting group. In certain embodiments, R^(XN) is —C(═O)R^(XA) wherein R^(XA) is optionally substituted alkyl or optionally substituted carbocyclyl. In certain embodiments, R^(XN) is —C(═O)R^(XA), wherein R^(XA) is methyl, ethyl, n-propyl, iso-propyl, cyclopropyl, or cyclobutyl. In certain embodiments, R^(XN) is —C(═O)R^(XA), wherein R^(XA) is methyl.

In certain embodiments of Formula (XVII-a-9), wherein —NR^(XN)— is —C(═O)R^(XA), provided is a compound of Formula (XVII-a-10):

or a pharmaceutically acceptable salt thereof, wherein R^(XA) is optionally substituted alkyl, optionally substituted carbocyclyl, optionally substituted heterocyclyl, optionally substituted aryl, or optionally substituted heteroaryl. In certain embodiments, R^(XA) is optionally substituted alkyl or optionally substituted carbocyclyl. In certain embodiments, R^(XA) is methyl, ethyl, n-propyl, iso-propyl, cyclopropyl, or cyclobutyl. In certain embodiments, R^(XA) is methyl.

In certain embodiments, a provided compound is of Formula (XVII-b):

or a pharmaceutically acceptable salt thereof, wherein each instance of R^(y) is as generally defined herein.

In certain embodiments of Formula (XVII-b), wherein at least one of R^(y) is —N(R^(B))₂, provided is a compound of Formula (XVII-b-1):

or a pharmaceutically acceptable salt thereof, wherein R^(y) and each instance of R^(B) are as generally defined herein. In certain embodiments, at least one R^(B) is an optionally substituted carbocyclic ring or optionally substituted heterocyclic ring, e.g., a 4- to 6-membered optionally substituted carbocyclic ring or a 4- to 6-membered optionally substituted heterocyclic ring.

In certain embodiments of Formula (XVII-b-1), wherein at least one R^(B) is a hydrogen, provided is a compound of Formula (XVII-b-2):

or a pharmaceutically acceptable salt thereof, wherein R^(y) and R^(B) are as generally defined herein. In certain embodiments, R^(B) is an optionally substituted carbocyclic ring or optionally substituted heterocyclic ring. In certain embodiments of Formula (XV-a-2), R^(B) is an optionally substituted carbocyclic ring, e.g., a 4- to 6-membered optionally substituted carbocyclic ring. In certain embodiments of Formula (XV-a-2), R^(B) is an optionally substituted heterocyclic ring, e.g., or a 4- to 6-membered optionally substituted heterocyclic ring.

In certain embodiments of Formula (XVII-b-2), wherein R^(B) is an optionally substituted heterocyclic ring, provided is a compound of Formula (XVII-b-3):

or a pharmaceutically acceptable salt thereof, wherein each instance of a and b is independently 1 or 2, and X is —C(R^(XC))₂-, —O—, —S—, or —NR^(XN)—, wherein each instance of R^(XC) is independently hydrogen, optionally substituted alkyl, optionally substituted carbocyclyl, optionally substituted heterocyclyl, optionally substituted aryl, or optionally substituted heteroaryl; R^(XN) is independently hydrogen, optionally substituted alkyl, optionally substituted carbocyclyl, optionally substituted heterocyclyl, optionally substituted aryl, optionally substituted heteroaryl, —C(═O)R^(XA), or a nitrogen protecting group; R^(XA) is optionally substituted alkyl, optionally substituted carbocyclyl, optionally substituted heterocyclyl, optionally substituted aryl, or optionally substituted heteroaryl. In certain embodiments, a and b are both 1. In certain embodiments, a and b are both 2. In certain embodiments, X is —O—. In certain embodiments, X is —NR^(XN)—, wherein R^(XN) is as generally defined above. In certain embodiments, X is —NR^(XN)—, wherein R^(XN) is optionally substituted alkyl, —C(═O)R^(XA), or a nitrogen protecting group. In certain embodiments, X is —NR^(XN)—, wherein R^(XN) is —C(═O)R^(XA), wherein R^(XA) is optionally substituted alkyl or optionally substituted carbocyclyl. In certain embodiments, X is —NR^(XN)—, wherein R^(XN) is —C(═O)R^(XA), wherein R^(XA) is methyl, ethyl, n-propyl, iso-propyl, cyclopropyl, or cyclobutyl. In certain embodiments, a and b are each independently 1 or 2; and X is —O— or —NR^(XN)—, wherein R^(XN) is as generally defined above. In certain embodiments, a and b are each independently 1 or 2; and X is —O— or —NC(═O)R^(XA) wherein R^(XA) is as generally defined above. In certain embodiments, a and b are both 1; and X is —O— or —NR^(XN)—, wherein R^(XN) is as generally defined above. In certain embodiments, a and b are both 1; and X is —O— or —NC(═O)R^(XA), wherein R^(XA) is as generally defined above. In certain embodiments, a and b are both 1; and X is —O— or —NC(═O)CH₃. In certain embodiments, a and b are both 1; and X is —O—. In certain embodiments, a and b are both 2; and X is —O— or —NC(═O)CH₃. In certain embodiments, a and b are both 2; and X is —NC(═O)CH₃.

In certain embodiments, a provided compound is of Formula (XV-b):

or a pharmaceutically acceptable salt thereof, wherein each R^(y) is as generally described herein.

In certain embodiments of Formula (XV-b), wherein at least one of R^(y) is —N(R^(B))₂, provided is a compound of Formula (XV-b-1):

or a pharmaceutically acceptable salt thereof, wherein R^(y) and R^(B) are as generally described herein. In certain embodiments, at least one R^(B) is an optionally substituted carbocyclic ring or optionally substituted heterocyclic ring, e.g., a 4- to 6-membered optionally substituted carbocyclic ring or a 4- to 6-membered optionally substituted heterocyclic ring.

In certain embodiments of Formula (XV-b-1), wherein at least one R^(B) is a hydrogen, provided is a compound of Formula (XV-b-2):

or a pharmaceutically acceptable salt thereof, wherein R^(y) and R^(B) are as generally described herein. In certain embodiments, R^(B) is an optionally substituted carbocyclic ring or optionally substituted heterocyclic ring. In certain embodiments, R^(B) is an optionally substituted carbocyclic ring, e.g., a 4- to 6-membered optionally substituted carbocyclic ring. In certain embodiments, R^(B) is an optionally substituted heterocyclic ring, e.g., or a 4- to 6-membered optionally substituted heterocyclic ring.

In certain embodiments of Formula (XV-b-2), wherein R^(B) is an optionally substituted heterocyclic ring, provided is a compound of Formula (XV-b-3):

or a pharmaceutically acceptable salt thereof, wherein each instance of a and b is independently 1 or 2, and X is —C(R^(XC))₂-, —O—, —S—, or —NR^(N)—, wherein each instance of R^(XC) is independently hydrogen, optionally substituted alkyl, optionally substituted carbocyclyl, optionally substituted heterocyclyl, optionally substituted aryl, or optionally substituted heteroaryl; R^(XN) is independently hydrogen, optionally substituted alkyl, optionally substituted carbocyclyl, optionally substituted heterocyclyl, optionally substituted aryl, optionally substituted heteroaryl, —C(═O)R^(XA), or a nitrogen protecting group; R^(XA) is optionally substituted alkyl, optionally substituted carbocyclyl, optionally substituted heterocyclyl, optionally substituted aryl, or optionally substituted heteroaryl. In certain embodiments, a and b are both 1. In certain embodiments, a and b are both 2. In certain embodiments, X is —O—. In certain embodiments, X is —NR^(XN)—, wherein R^(XN) is as generally defined above. In certain embodiments, X is —NR^(XN)—, wherein R^(XN) is optionally substituted alkyl, —C(═O)R^(XA) or a nitrogen protecting group. In certain embodiments, X is —NR^(XN)—, wherein R^(XN) is —C(═O)R^(XA), wherein R^(XA) is optionally substituted alkyl or optionally substituted carbocyclyl. In certain embodiments, X is —NR^(XN)—, wherein R^(XN) is —C(═O)R^(XA), wherein R^(XA) is methyl, ethyl, n-propyl, iso-propyl, cyclopropyl, or cyclobutyl. In certain embodiments, a and b are each independently 1 or 2; and X is —O— or —NR^(XN)—, wherein R^(XN) is as generally defined above. In certain embodiments, a and b are each independently 1 or 2; and X is —O— or —NC(═O)R^(XA), wherein R^(XA) is as generally defined above. In certain embodiments, a and b are both 1; and X is —O— or —NR^(XN)—, wherein R^(XN) is as generally defined above. In certain embodiments, a and b are both 1; and X is —O— or —NC(═O)CH₃. In certain embodiments, a and b are both 1; and X is —O—. In certain embodiments, a and b are both 2; and X is —O— or —NC(═O)CH₃. In certain embodiments, a and b are both 2; and X is —NC(═O)CH₃.

In certain embodiments, a provided compound is of Formula (XV-c):

or a pharmaceutically acceptable salt thereof, wherein each R^(y) is as generally described herein.

In certain embodiments of Formula (XV-c), wherein at least one of R^(y) is —N(R^(B))₂, provided is a compound of Formula (XV-c-1):

or a pharmaceutically acceptable salt thereof, wherein R^(y) and R^(B) are as generally described herein. In certain embodiments, at least one R^(B) is an optionally substituted carbocyclic ring or optionally substituted heterocyclic ring, e.g., a 4- to 6-membered optionally substituted carbocyclic ring or a 4- to 6-membered optionally substituted heterocyclic ring.

In certain embodiments of Formula (XV-c-1), wherein at least one R^(B) is a hydrogen, provided is a compound of Formula (XV-c-2):

or a pharmaceutically acceptable salt thereof, wherein R^(y) and R^(B) are as generally described herein. In certain embodiments, R^(B) is an optionally substituted carbocyclic ring or optionally substituted heterocyclic ring. In certain embodiments, R^(B) is an optionally substituted carbocyclic ring, e.g., a 4- to 6-membered optionally substituted carbocyclic ring. In certain embodiments, R^(B) is an optionally substituted heterocyclic ring, e.g., or a 4- to 6-membered optionally substituted heterocyclic ring.

In certain embodiments of Formula (XV-c-2), wherein R^(B) is an optionally substituted heterocyclic ring, provided is a compound of Formula (XV-c-3):

or a pharmaceutically acceptable salt thereof, wherein each instance of a and b is independently 1 or 2, and X is —C(R^(XC))₂-, —O—, —S—, or —NR^(XN)—, wherein each instance of R^(XC) is independently hydrogen, optionally substituted alkyl, optionally substituted carbocyclyl, optionally substituted heterocyclyl, optionally substituted aryl, or optionally substituted heteroaryl; R^(XN) is independently hydrogen, optionally substituted alkyl, optionally substituted carbocyclyl, optionally substituted heterocyclyl, optionally substituted aryl, optionally substituted heteroaryl, —C(═O)R^(XA), or a nitrogen protecting group; R^(XA) is optionally substituted alkyl, optionally substituted carbocyclyl, optionally substituted heterocyclyl, optionally substituted aryl, or optionally substituted heteroaryl. In certain embodiments, a and b are both 1. In certain embodiments, a and b are both 2. In certain embodiments, X is —O—. In certain embodiments, X is —NR^(XN)—, wherein R^(XN) is as generally defined herein. In certain embodiments, X is —NR^(XN)—, wherein R^(XN) is optionally substituted alkyl, —C(═O)R^(XA) or a nitrogen protecting group. In certain embodiments, X is —NR^(XN)—, wherein R^(XN) is —C(═O)R^(XA), wherein R^(XA) is optionally substituted alkyl or optionally substituted carbocyclyl. In certain embodiments, X is —NR^(XN)—, wherein R^(XN) is —C(═O)R^(XA), wherein R^(XA) is methyl, ethyl, n-propyl, iso-propyl, cyclopropyl, or cyclobutyl. In certain embodiments, a and b are each independently 1 or 2; and X is —O— or —NR^(XN)—, wherein R^(XN) is as generally defined herein. In certain embodiments, a and b are each independently 1 or 2; and X is —O— or —NC(═O)R^(XA), wherein R^(XA) is as generally defined herein. In certain embodiments, a and b are both 1; and X is —O— or —NR^(XN)—, wherein R^(XN) is as generally defined herein. In certain embodiments, a and b are both 1; and X is —O— or —NC(═O)CH₃. In certain embodiments, a and b are both 1; and X is —O—. In certain embodiments, a and b are both 2; and X is —O— or —NC(═O)CH₃. In certain embodiments, a and b are both 2; and X is —NC(═O)CH₃.

In some embodiments, a provided compound is of Formula (XVII-a-3):

In some embodiments, a provided compound is a hydrochloride salt of Formula (XVII-a-3):

In some embodiments, e.g. for Formula (A) and any subgenera thereof, e.g. Formula (XV), (XVI), (XVII), (XVIII), (XV-a), (XVI-a), (XVII-a), (XVII-b), (XVIII-a), (XV-b), or (XV-c), the provided compound is of a free base form. In some embodiments, e.g. for Formula (XV), (XVI), (XVII), (XVIII), (XV-a), (XVI-a), (XVII-a), (XVII-b), (XVIII-a), (XV-b), or (XV-c), the provided compound is in the form of a pharmaceutically acceptable salt. In some embodiments, the provided pharmaceutically acceptable salt is formed with hydrochloric acid, hydrobromic acid, phosphoric acid, sulfuric acid, perchloric acid, acetic acid, oxalic acid, maleic acid, tartaric acid, citric acid, succinic acid, or malonic acid. In some embodiments, the provided pharmaceutically acceptable salt is adipate, alginate, ascorbate, aspartate, benzenesulfonate, benzoate, bisulfate, borate, butyrate, camphorate, camphorsulfonate, citrate, cyclopentanepropionate, digluconate, dodecylsulfate, ethanesulfonate, formate, fumarate, glucoheptonate, glycerophosphate, gluconate, hemisulfate, heptanoate, hexanoate, hydroiodide, 2-hydroxy-ethanesulfonate, lactobionate, lactate, laurate, lauryl sulfate, malate, maleate, malonate, methanesulfonate, 2-naphthalenesulfonate, nicotinate, nitrate, oleate, oxalate, palmitate, pamoate, pectinate, persulfate, 3-phenylpropionate, phosphate, picrate, pivalate, propionate, stearate, succinate, sulfate, tartrate, thiocyanate, p-toluenesulfonate, undecanoate, or valerate salts. In some embodiments, the provided pharmaceutically acceptable salt is a hydrochloride salt. In some embodiments, the provided pharmaceutically acceptable salt is a tartrate salt. In some embodiments, the provided pharmaceutically acceptable salt is a monotartrate salt. In some embodiments, the provided pharmaceutically acceptable salt is a bitartrate salt.

In some embodiments, the provided compound is of one of the following formulae:

In some embodiments, the provided compound is a hydrochloride salt of one of the following formulae:

In some embodiments, the provided compound is a tartrate salt of one of the following formulae:

In certain embodiments, the provided compound is a monotartrate salt thereof. In certain embodiments, the provided compound is a bitartrate salt thereof.

In some embodiments, e.g. for Formula (A) and any subgenera thereof, e.g. for Formula (XV), (XVI), (XVII), (XVIII), (XV-a), (XVI-a), (XVII-a), (XVII-b), (XVIII-a), (XV-b), or (XV-c), at least one R^(y) is halo. In certain embodiments, at least one R^(y) is fluoro. In certain embodiments, at least one R^(y) is chloro. In some embodiments, at least one R^(y) is —CN.

In some embodiments, e.g. for Formula (A) and any subgenera thereof, e.g. for Formula (XV), (XVI), (XVII), (XVIII), (XV-a), (XVI-a), (XVII-a), (XVII-b), (XVIII-a), (XV-b), or (XV-c), at least one R^(y) is —OR^(A), wherein R^(A) is optionally substituted aliphatic. In some embodiments, R^(y) is —OR^(A), wherein R^(A) is -(optionally substituted alkyl)-(optionally substituted carbocyclyl)-, -(optionally substituted alkyl)-(optionally substituted heterocyclyl)-, or -(optionally substituted alkyl)-(optionally substituted heteroaryl)-. In some embodiments, at least one R^(y) is —OR^(A), wherein R^(A) is unsubstituted C₁₋₆ alkyl. In certain embodiments, at least one R^(y) is methoxy, ethoxy, or propoxy. In certain embodiments, at least one R^(y) is methoxy. In some embodiments, at least one R^(y) is —OR^(A), wherein R^(A) is substituted C₁₋₆ alkyl. In certain embodiments, at least one R^(y) is —OCH₂CH₂N(CH₃)₂. In some embodiments, at least one R^(y) is —OR^(A), wherein R^(A) is optionally substituted heterocyclyl. In some embodiments, at least one R^(y) is —OR^(A), wherein R^(A) is an optionally subsituted 4- to 7-membered heterocyclyl having 1-2 heteroatoms independently selected from nitrogen, oxygen, and sulfur. In some embodiments, at least one R^(y) is —OR^(A), wherein R^(A) is oxetanyl, tetrahydrofuranyl, or tetrahydropyranyl. In some embodiments, at least one R^(y) is —OR^(A), wherein R^(A) is optionally substituted piperidinyl or optionally substituted piperazinyl. In some embodiments, at least one R^(y) is —OR^(A), wherein R^(A) is optionally substituted heterocyclyl. In some embodiments, at least one R^(y) is —OR^(A), wherein R^(A) is optionally substituted heteroaryl. In some embodiments, at least one R^(y) is —OR^(A), wherein R^(A) is optionally substituted cycloalkyl.

In some embodiments, e.g. for Formula (A) and any subgenera thereof, e.g. for Formula (XV), (XVI), (XVII), (XVIII), (XV-a), (XVI-a), (XVII-a), (XVII-b), (XVIII-a), (XV-b), or (XV-c), at least one R^(y) is —N(R^(B))₂. In some embodiments, at least one R^(y) is —N(R^(B))₂, wherein each R^(B) is independently hydrogen, optionally substituted alkyl, optionally substituted heterocyclyl, optionally substituted carbocyclyl, or optionally substituted aryl. In some embodiments, at least one R^(y) is —N(R^(B))₂, wherein each R^(B) is independently hydrogen or C₁₋₆ alkyl. In some embodiments, at least one R^(y) is —NHR^(B). In some embodiments, at least one R^(y) is —NHR^(B), wherein each R^(B) is independently hydrogen, optionally substituted alkyl, optionally substituted heterocyclyl, optionally substituted carbocyclyl, or optionally substituted aryl. In some embodiments, at least one R^(y) is —N(C₁₋₆ alkyl)₂, —NH(C₁₋₆ alkyl), or —NH₂. In certain embodiments, at least one R^(y) is —NH₂. In certain embodiments, at least one R^(y) is —NHCH₃. In certain embodiments, at least one R^(y) is —N(CH₃)₂. In some embodiments, at least one R^(y) is —N(CH₃)R^(B), wherein each R^(B) is independently hydrogen, optionally substituted alkyl, optionally substituted heterocyclyl, optionally substituted carbocyclyl, or optionally substituted aryl. In some embodiments, at least one R^(y) is —N(R^(B))₂, wherein each R^(B) is independently hydrogen or C₁₋₆ alkyl. In some embodiments, at least one R^(y) is —NHR^(B). In some embodiments, at least one R^(y) is —N(C₁₋₆ alkyl)₂, —NH(C₁₋₆ alkyl), or —NH₂. In certain embodiments, at least one R^(y) is —NH₂. In some embodiments, at least one R^(y) is —N(R^(B))₂, —NHR^(B), or —N(CH₃)R^(B), wherein at least one R^(B) is optionally substituted heterocyclyl. In some embodiments, at least one R^(y) is —N(R^(B))₂, —NHR^(B), or —N(CH₃)R^(B), wherein at least one R^(B) is an optionally subsituted 4- to 7-membered heterocyclyl having 1-2 heteroatoms independently selected from nitrogen, oxygen, and sulfur. In some embodiments, at least one R^(y) is —N(R^(B))₂, —NHR^(B), or —N(CH₃)R^(B), wherein at least one R^(B) is oxetanyl, tetrahydropyranyl, or tetrahydrofuranyl. In some embodiments, at least one R^(y) is —N(R^(B))₂, —NHR^(B), or —N(CH₃)R^(B), wherein at least one R^(B) is optionally substituted piperidinyl or optionally substituted piperazinyl. In some embodiments, at least one R^(y) is —N(R^(B))₂, —NHR^(B), or —N(CH₃)R^(B), wherein at least one R^(B) is -(optionally substituted C₁₋₆ alkyl)-(C₁₋₆ alkyl heterocyclyl). In some embodiments, at least one R^(y) is —N(R^(B))₂, wherein one R^(B) is optionally substituted heterocyclyl, and the other R^(B) is C₁₋₄ alkyl. In some embodiments, at least one R^(y) is —N(R^(B))₂, wherein one R^(B) is optionally substituted heteroaryl, and the other R^(B) is C₁₋₄ alkyl. In some embodiments, at least one R^(y) is —N(R^(B))₂, wherein one R^(B) is optionally substituted cycloalkyl, and the other R^(B) is C₁₋₄ alkyl.

In some embodiments, e.g. for Formula (A) and any subgenera thereof, e.g. for Formula (XV), (XVI), (XVII), (XVIII), (XV-a), (XVI-a), (XVII-a), (XVII-b), (XVIII-a), (XV-b), or (XV-c), at least one R^(y) is optionally substituted aliphatic. In certain embodiments, at least one R^(y) is substituted aliphatic. In certain embodiments, at least one R^(y) is unsubstituted aliphatic. In some embodiments, at least one R^(y) is optionally substituted C₁₋₆ alkyl. In certain embodiments, at least one R^(y) is unsubstituted C₁₋₆ alkyl. In certain embodiments, at least one R^(y) is substituted C₁₋₆ alkyl. In certain embodiments, at least one R^(y) is methyl, ethyl, or propyl. In certain embodiments, at least one R^(y) is methyl. In certain embodiments, at least one R^(y) is —CF₃, CHF₂, or CH₂F. In certain embodiments, at least one R^(y) is optionally substituted C₁₋₆ alkyl further substituted with optionally substituted aryl, heteroaryl, or heterocyclyl. In certain embodiments, at least one R^(y) is benzyl. In certain embodiments, at least one R^(y) is —(C₁₋₆ alkyl)-(optionally substitutedaryl). In certain embodiments, at least one R^(y) is —(C₁₋₆ alkyl)-(optionally substituted heteroaryl). In certain embodiments, at least one R^(y) is —(C₁₋₆ alkyl)-(optionally substituted heterocyclyl). In certain embodiments, at least one R^(y) is —(C₁₋₆ alkyl)-aryl. In certain embodiments, at least one R^(y) is —(C₁₋₆ alkyl)-heteroaryl. In certain embodiments, at least one R^(y) is —(C₁₋₆ alkyl)-heterocyclyl. In certain embodiments, at least one R^(y) is —CH₂-aryl. In certain embodiments, at least one R^(y) is —CH₂-heteroaryl. In certain embodiments, at least one R^(y) is —CH₂— heterocyclyl.

In some embodiments, e.g. for Formula (A) and any subgenera thereof, e.g. for Formula (XV), (XVI), (XVII), (XVIII), (XV-a), (XVI-a), (XVII-a), (XVII-b), (XVIII-a), (XV-b), or (XV-c), at least one R^(y) is —C(O)N(R^(B))₂. In certain embodiments, at least one R^(y) is —C(O)NHR^(B). In certain embodiments, at least one R^(y) is —C(O)NH₂. In certain embodiments, at least one R^(y) is —C(O)N(R^(B))₂, wherein the R^(B) groups are taken together with their intervening atoms to form an optionally substituted 5- to 6-membered heterocyclyl. In certain embodiments, at least one R^(y) is —C(O)N(R^(B))₂, wherein the R^(B) groups are taken together with their intervening atoms to form an optionally substituted morpholinyl.

In some embodiments, e.g. for Formula (A) and any subgenera thereof, e.g. for Formula (XV), (XVI), (XVII), (XVIII), (XV-a), (XVI-a), (XVII-a), (XVII-b), (XVIII-a), (XV-b), or (XV-c), at least one R^(y) is —SO₂N(R^(B))₂. In certain embodiments, at least one R^(y) is —SO₂NHR^(B). In certain embodiments, at least one R^(y) is —SO₂NH₂. In certain embodiments, at least one R^(y) is —SO₂N(R^(B))₂, wherein neither R^(B) is hydrogen. In certain embodiments, at least one R^(y) is —SO₂NH(C₁₋₆ alkyl) or —SO₂N(C₁₋₆ alkyl)₂. In certain embodiments, at least one R^(y) is —SO₂N(CH₃)₂. In certain embodiments, at least one R^(y) is —SO₂N(R^(B))₂, wherein the R^(B)groups are taken together with their intervening atoms to form an optionally substituted 5- to 6-membered heterocyclyl. In certain embodiments, at least one R^(y) is —SO₂-morpholinyl. In certain embodiments, at least one R^(y) is —SO₂-piperidinyl, —SO₂-piperazinyl, or —SO₂— piperidinyl.

In some embodiments, e.g. for Formula (A) and any subgenera thereof, e.g. for Formula (XV), (XVI), (XVII), (XVIII), (XV-a), (XVI-a), (XVII-a), (XVII-b), (XVIII-a), (XV-b), or (XV-c), at least one R^(y) is —SO₂R^(A). In some embodiments, at least one R^(y) is —SO₂R^(A), wherein R^(A) is optionally substituted aliphatic. In some embodiments, at least one R^(y) is —SO₂(C₁₋₆ alkyl). In some embodiments, at least one R^(y) is —SO₂CH₃. In some embodiments, at least one R^(y) is —C(O)R^(A). In some embodiments, at least one R^(y) is —C(O)R^(A), wherein R^(A) is optionally substituted aliphatic. In some embodiments, at least one R^(y) is —C(O)(C₁₋₆ alkyl). In some embodiments, at least one R^(y) is —C(O)CH₃.

In some embodiments, e.g. for Formula (A) and any subgenera thereof, e.g. for Formula (XV), (XVI), (XVII), (XVIII), (XV-a), (XVI-a), (XVII-a), (XVII-b), (XVIII-a), (XV-b), or (XV-c), at least one R^(y) is —N(R^(B))C(O)R^(A). In certain embodiments, at least one R^(y) is —NHC(O)R^(A). In certain embodiments, at least one R^(y) is —NHC(O)(C₁₋₆ alkyl). In certain embodiments, at least one R^(y) is —NHC(O)CH₃.

In some embodiments, e.g. for Formula (A) and any subgenera thereof, e.g. for Formula (XV), (XVI), (XVII), (XVIII), (XV-a), (XVI-a), (XVII-a), (XVII-b), (XVIII-a), (XV-b), or (XV-c), at least one R^(y) is —N(R^(B))SO₂R^(A). In some embodiments, at least one R^(y) is —NHSO₂R^(A). In some embodiments, at least one R^(y) is —N(C₁₋₆ alkyl)SO₂R^(A). In certain embodiments, at least one R^(y) is —NHSO₂(C₁₋₆ alkyl) or —N(C₁₋₆ alkyl)SO₂(C₁₋₆ alkyl). In certain embodiments, at least one R^(y) is —NHSO₂CH₃. In certain embodiments, at least one R^(y) is —N(CH₃)SO₂CH₃.

In some embodiments, e.g. for Formula (A) and any subgenera thereof, e.g. for Formula (XV), (XVI), (XVII), (XVIII), (XV-a), (XVI-a), (XVII-a), (XVII-b), (XVIII-a), (XV-b), or (XV-c), at least one R^(y) is optionally substituted heterocyclyl, optionally substituted carbocyclyl, optionally substituted aryl, or optionally substituted heteroaryl. In certain embodiments, at least one R^(y) is an optionally substituted 5- to 6-membered heterocyclyl having 1-2 heteroatoms independently selected from nitrogen, oxygen, and sulfur. In certain embodiments, at least one R^(y) is an optionally substituted 5-membered heterocyclyl having one heteroatom selected from nitrogen, oxygen, and sulfur. In certain embodiments, at least one R^(y) is optionally substituted pyrrolidinyl. In certain embodiments, at least one R^(y) is pyrroldinyl, hydroxypyrrolidinyl, or methylpyrrolidinyl. In certain embodiments, at least one R^(y) is an optionally substituted 6-membered heterocyclyl having 1-2 heteroatoms independently selected from nitrogen, oxygen, and sulfur. In certain embodiments, at least one R^(y) is an optionally substituted 6-membered heterocyclyl having one heteroatom selected from nitrogen, oxygen, and sulfur. In certain embodiments, at least one R^(y) is optionally substituted piperidinyl. In certain embodiments, at least one R^(y) is an optionally substituted 6-membered heterocyclyl having two heteroatoms independently selected from nitrogen, oxygen, and sulfur. In certain embodiments, at least one R^(y) is optionally substituted piperdinyl, optionally substituted piperazinyl, or optionally substituted morpholinyl. In certain embodiments, at least one R^(y) is morpholinyl, tetrahydropyranyl, piperidinyl, methylpiperidinyl, piperazinyl, methylpiperazinyl, acetylpiperazinyl, methylsulfonylpiperazinyl, aziridinyl, or methylaziridinyl. In some embodiments, at least one R^(y) is an optionally substituted 5- to 6-membered heteroaryl having 1-3 heteroatoms independently selected from nitrogen, oxygen, and sulfur. In certain embodiments, at least one R^(y) is an optionally substituted 5-membered heteroaryl having 1-3 heteroatoms independently selected from nitrogen, oxygen, and sulfur. In certain embodiments, at least one R^(y) is an optionally substituted 5-membered heteroaryl having one heteroatom selected from nitrogen, oxygen, and sulfur. In certain embodiments, at least one R^(y) is an optionally substituted 5-membered heteroaryl having two heteroatoms independently selected from nitrogen, oxygen, and sulfur. In certain embodiments, at least one R^(y) is an optionally substituted 6-membered heteroaryl having 1-3 nitrogens. In certain embodiments, at least one R^(y) is an optionally substituted pyrazolyl. In certain embodiments, at least one R^(y) is an optionally substituted imidazolyl. In certain embodiments, at least one R^(y) is an optionally substituted pyridyl. In certain embodiments, at least one R^(y) is an optionally substituted pyrimidyl. In certain embodiments, at least one R^(y) is pyrazolyl, methylpyrazolyl, imidazolyl, or methylimidazolyl.

As generally defined above, R^(A1) and R^(A2) are independently hydrogen, substituted or unsubstituted C₁₋₃ alkyl, substituted or unsubstituted acyl, or a nitrogen protecting group. In some embodiments, R^(A1) is hydrogen. In some embodiments, R^(A1) is substituted or unsubstituted C₁₋₃ alkyl. In some embodiments, R^(A1) is unsubstituted C₁₋₃ alkyl. In some embodiments, R^(A1) is methyl, ethyl, n-propyl, or isopropyl. In some embodiments, R^(A1) is substituted C₁₋₃ alkyl. In some embodiments, R^(A1) is —CF₃, —CHF₂, —CH₂F, or —CH(CF₃)CH₃. In some embodiments, R^(A1) is substituted or unsubstituted acyl. In some embodiments, R^(A1) is acetyl. In some embodiments, R^(A1) is a nitrogen protecting group. In some embodiments, R^(A1) is CH₃SO₂-. In some embodiments, R^(A2) is hydrogen. In some embodiments, R^(A2) is substituted or unsubstituted C₁₋₃ alkyl. In some embodiments, R^(A2) is unsubstituted C₁₋₃ alkyl. In some embodiments, R^(A2) is methyl, ethyl, n-propyl, or isopropyl. In some embodiments, R^(A2) is substituted C₁₋₃ alkyl. In some embodiments, R^(A2) is —CF₃, —CHF₂, —CH₂F, or —CH(CF₃)CH₃. In some embodiments, R^(A2) is substituted or unsubstituted acyl. In some embodiments, R^(A2) is acetyl. In some embodiments, R^(A2) is a nitrogen protecting group. In some embodiments, R^(A2) is CH₃SO₂-. In some embodiments, R^(A1) is hydrogen, and R^(A2) is hydrogen. In some embodiments, R^(A1) is hydrogen, and R^(A2) is substituted or unsubstituted C₁₋₃ alkyl. In some embodiments, R^(A1) is hydrogen, and R² is methyl, ethyl, n-propyl, or isopropyl. In some embodiments, R^(A1) is hydrogen, and R^(A2) is —CF₃, —CHF₂, —CH₂F, or —CH(CF₃)CH₃. In some embodiments, R^(A1) is hydrogen, and R² is substituted or unsubstituted acyl. In some embodiments, R^(A1) is hydrogen, and R^(A2) is acetyl. In some embodiments, R^(A1) is hydrogen, and R^(A2) is a nitrogen protecting group. In some embodiments, R^(A1) is hydrogen and R^(A2) is CH₃SO₂-. In some embodiments, R^(A1) is substituted or unsubstituted C₁₋₃ alkyl, and R^(A2) is substituted or unsubstituted C₁₋₃ alkyl. In some embodiments, R^(A1) is substituted or unsubstituted C₁₋₃ alkyl, and R^(A2) is methyl. In some embodiments, R^(A1) is substituted or unsubstituted C₁₋₃ alkyl, and R^(A2) is ethyl. In some embodiments, R^(A1) is substituted or unsubstituted C₁₋₃ alkyl, and R^(A2) is n-propyl. In some embodiments, R^(A1) is substituted or unsubstituted C₁₋₃ alkyl, and R^(A2) is isopropyl. In some embodiments, R^(A1) is substituted or unsubstituted C₁₋₃ alkyl, and R² is substituted or unsubstituted acyl. In some embodiments, R^(A1) is substituted or unsubstituted C₁₋₃ alkyl, and R^(A2) is a nitrogen protecting group. In some embodiments, R^(A1) is methyl, and R^(A2) is substituted or unsubstituted C₁₋₃ alkyl. In some embodiments, R^(A1) is methyl, and R^(A2) is methyl. In some embodiments, R^(A1) is methyl, and R² is ethyl. In some embodiments, R^(A1) is methyl, and R^(A2) is n-propyl. In some embodiments, R^(A1) is methyl, and R^(A2) is isopropyl. In some embodiments, R^(A1) is methyl, and R^(A2) is substituted or unsubstituted acyl. In some embodiments, R^(A1) is methyl, and R^(A2) is a nitrogen protecting group. In some embodiments, R^(A1) is ethyl, and R^(A2) is substituted or unsubstituted C₁₋₃ alkyl. In some embodiments, R^(A1) is ethyl, and R^(A2) is methyl. In some embodiments, R^(A1) is ethyl, and R^(A2) is ethyl. In some embodiments, R^(A1) is ethyl, and R^(A2) is n-propyl. In some embodiments, R^(A1) is ethyl, and R^(A2) is isopropyl. In some embodiments, R^(A1) is ethyl, and R^(A2) is substituted or unsubstituted acyl. In some embodiments, R^(A1) is ethyl, and R^(A2) is a nitrogen protecting group. In some embodiments, R^(A1) is n-propyl, and R^(A2) is substituted or unsubstituted C₁₋₃ alkyl. In some embodiments, R^(A1) is n-propyl, and R^(A2) is methyl. In some embodiments, R^(A1) is n-propyl, and R^(A2) is ethyl. In some embodiments, R^(A1) is n-propyl, and R^(A2) is n-propyl. In some embodiments, R^(A1) is n-propyl and R^(A2) is isopropyl. In some embodiments, R^(A1) is n-propyl, and R^(A2) is substituted or unsubstituted acyl. In some embodiments, R^(A1) is n-propyl and R^(A2) is a nitrogen protecting group. In some embodiments, R^(A1) is isopropyl and R^(A2) is substituted or unsubstituted C₁₋₃ alkyl. In some embodiments, R^(A1) is isopropyl and R² is methyl. In some embodiments, R^(A1) is isopropyl and R^(A2) is ethyl. In some embodiments, R^(A1) is isopropyl, and R^(A2) is n-propyl. In some embodiments, R^(A1) is isopropyl, and R^(A2) is isopropyl. In some embodiments, R^(A1) is isopropyl, and R^(A2) is substituted or unsubstituted acyl. In some embodiments, R^(A1) is isopropyl, and R^(A2) is a nitrogen protecting group. In some embodiments, R^(A1) is substituted or unsubstituted acyl, and R^(A2) is substituted or unsubstituted C₁₋₃ alkyl. In some embodiments, R^(A1) is a nitrogen protecting group, and R^(A2) is substituted or unsubstituted C₁₋₃ alkyl. In some embodiments, R^(A1) is a nitrogen protecting group and R^(A2) is methyl. In some embodiments, R^(A1) is a nitrogen protecting group, and R^(A2) is ethyl. In some embodiments, R^(A1) is a nitrogen protecting group, and R^(A2) is n-propyl. In some embodiments, R^(A1) is a nitrogen protecting group, and R^(A2) is isopropyl. In some embodiments, R^(A1) is a nitrogen protecting group, and R^(A2) is a nitrogen protecting group.

As generally defined above, R^(A1) and R^(A2) can be taken together with the intervening nitrogen atom to form a substituted or unsubstituted 3-6 membered heterocyclic ring. In certain embodiments, R^(A1) and R^(A2) can be taken together with the intervening nitrogen atom to form a substituted or unsubstituted azetidine. In certain embodiments, R^(A1) and R^(A2) can be taken together with the intervening nitrogen atom to form a substituted or unsubstituted pyrrolidine. In certain embodiments, R^(A1) and R^(A2) can be taken together with the intervening nitrogen atom to form a substituted or unsubstituted piperidine. In certain embodiments, R^(A1) and R^(A2) can be taken together with the intervening nitrogen atom to form a substituted or unsubstituted piperazine. In certain embodiments, R^(A1) and R^(A2) can be taken together with the intervening nitrogen atom to form a substituted or unsubstituted morpholine.

In certain embodiments, a provided compound is not of any one of the following formulae:

In certain embodiments, a provided compound is a compound listed in Table 1A, or a pharmaceutically acceptable salt thereof.

TABLE 1A Exemplary Compounds Cmpd LCMS m/z No Structure Exact Mass (M + H) 1

387.1947 388.2 2

390.2056 391.2 3

310.1681 311.1 4

310.1681 311.1 5

325.179 326.2 6

325.179 326.2 7

326.163 327.2 8

387.1947 388.2 9

387.1947 388.2 10

376.1899 377.2 11

326.163 327.2 12

387.1947 388.2 13

387.1947 388.2 14

395.2209 396.2 15

423.2522 424.2 16

409.2365 410.2 17

311.1634 312.1 18

311.1634 312.2 19

387.1947 388.2 20

387.1947 388.2 21

389.1409 390.1 22

353.1739 354.1 23

367.1896 368.1 24

403.1566 404.1 25

353.1739 354.2 26

367.1896 368.2 27

403.1566 404.2 28

397.2365 398.1 29

408.2525 409.2 30

422.2682 423.2 31

403.1566 404.2 32

389.1409 390.1 33

389.1409 390 34

393.2416 394.1 35

394.2369 395.2 36

408.2525 409.2 37

379.226 380.2 38

393.2416 394.2 39

383.2209 384.2 40

423.2522 424.2 41

451.2835 452.3 42

379.226 380.2 43

409.2365 410.2 44

409.2365 410.2 45

395.2209 396.2 46

423.2158 424.2 47

437.2678 438.3 48

410.2206 411.2 49

423.2522 424.1 50

381.2052 382.2 51

409.2365 410.1 52

437.2678 438.3 53

437.2678 438.3 54

410.2318 411.1 55

410.2318 411.1 56

439.2471 440.1 57

427.2271 428.2 58

410.2206 411.2 59

408.2413 409.1 60

409.2365 410.2 61

438.2631 439.2 62

411.227 412.2 63

411.227 412.2 64

443.1976 444.1 65

427.2271 428 66

409.2365 410.1 67

439.2471 440.2 68

361.179 362.1 69

397.2365 398.2 71

423.2522 424.2 72

383.2209 384.2 73

410.2318 411.1 74

410.2318 411.2 75

411.227 412.1 76

411.227 412.2 77

439.2471 440.2 78

427.2271 428.2 79

427.2271 428.2 80

395.2209 396.2 81

395.2209 396.2 82

410.2206 411.1 83

410.2206 411.1 84

375.1947 376 85

362.1743 363.1 86

406.2005 407.2 87

383.2209 384.2 88

367.1896 368.1 89

381.1689 382.1 90

436.2838 437.2 91

486.2301 487.2 92

490.2556 491.3 93

394.2369 395.2 94

408.2525 409.3 95

423.2522 424.3 96

409.2365 410.3 97

395.2209 396.2 98

425.2315 426.2 99

394.2256 395.2 100

450.2631 451.2 101

436.2838 437.2 102

476.2399 477.2 103

450.2995 451.3 104

409.2365 410.2 105

423.2522 424.2 106

451.2835 452.2 107

451.2471 452.2 108

487.2141 488.2 109

491.2396 492.2 110

377.1852 378.2 111

423.2522 424.2 112

376.1899 377.1 113

452.2787 453.2 114

466.2944 467.2 115

452.2787 453.2 116

396.2161 397.1 117

410.2318 411.1 118

424.2474 425.1 119

395.2209 396.2 120

408.2525 409.2 121

436.2474 437.2 122

472.2144 473 123

422.2682 423.2 124

450.2631 451.3 125

486.2301 487.2 126

490.2556 491.2 127

450.2631 451.3 128

490.2556 491.2 129

395.2209 396.2 130

377.1852 378.2 131

436.2838 437.2 132

422.2682 423.2 133

439.2471 440.2 134

409.2365 410.3 135

437.2678 438.3 136

437.2315 438.2 137

477.2239 478.3 138

408.2525 409.3 139

422.2682 423.2 140

450.2995 451.2 141

486.2301 487.2 142

396.2049 397.2 143

408.2525 409.3 144

409.2365 410.2 145

409.2365 410.2 146

398.2206 399.2 147

451.2947 452.2 148

300.1586 315.2 149

314.1743 315.1 150

314.1743 315.1 151

340.1787 341.1 152

437.2678 438.3 153

437.2678 438.3 154

380.21 381.2 155

391.1896 392.2 156

493.3053 494.2 157

466.258 467.2 158

494.2893 495.3 159

493.3053 494.2 160

452.2787 453.3 161

436.2838 437.2 162

473.1984 474.2 163

422.2682 423.3 164

443.1879 444.2 165

494.2893 495.2 166

383.1957 384.1 167

423.2522 424.2 168

423.2522 424.2 169

399.227 400.2 170

300.1586 301.1 171

314.1743 315.1 172

465.274 466.2 173

479.2896 480.3 174

493.3053 494.4 175

507.3209 508.3 176

395.2209 396.2 177

409.2365 410.2 178

411.2522 412.2 179

443.1879 444.2 180

410.243 411.2 181

410.243 411.3 182

478.2304 479.3 183

411.2158 412.3 184

410.2318 411.3 185

411.227 412.1 186

411.2634 412.3 187

380.2212 381.3 188

380.2212 381.2 189

417.2165 418.2 190

417.2165 418.3 191

417.2165 418.2 192

410.2318 411.3 193

411.227 412.2 194

521.3366 522.3 195

410.2318 411.2 196

437.2678 438.3 197

437.2315 438.2 198

473.1984 474.2 199

477.2239 478.3 200

409.2478 410.3 201

395.2321 396.2 202

424.2474 425.3 203

492.2348 493.3 204

488.2093 489.3 205

452.2424 453.3 206

424.2587 425.2 207

492.2461 493.3 208

452.2536 453.3 209

396.2274 397.3 210

438.2379 439.3 211

396.2161 397.1 212

423.2522 424.3 213

423.2522 424.3 214

397.2478 398.2 215

450.2631 451.3 216

486.2301 487.3 217

490.2556 491.3 218

361.179 362.1 219

375.1947 376.1 220

361.179 362.1 221

375.1947 376.1 222

426.2267 427.1 223

423.2634 424.1 224

491.2508 492.2 225

487.2253 488.3 226

477.2352 478.3 227

473.2097 474.2 228

437.2427 438.3 229

410.2318 411.3 230

397.2114 398.1 231

425.2427 426.1 232

425.2427 426.3 233

397.2478 398.3 234

398.2318 399.3 235

423.2634 424.3 236

423.2634 424.3 237

423.2634 424.3 238

425.2427 426.3 239

422.2682 423.1 240

349.179 350.1 241

350.1743 351.1 242

350.1743 351.1 243

352.1787 353.2 244

354.158 355 245

362.1743 363.1 246

363.1947 364.1 247

364.2151 365.1 248

366.1402 367 249

368.1736 369.1 250

380.1736 381.1 251

390.1943 391.1 252

507.3209 508.2 253

452.2787 453.2 254

451.2583 452.3 255

409.2478 410.3 256

412.2111 413.1 257

474.2049 475.3 258

411.227 412.2 259

395.2321 396.1 260

410.2318 411.1 261

425.2427 426.3 262

461.2097 462.3 263

475.2253 476.3 264

437.2791 438.3 265

439.2583 440.3 266

436.2474 437.3 267

472.2144 473.3 268

472.2144 473.3 269

349.179 350.2 270

349.179 350 271

350.163 351 272

361.179 362.1 273

367.1354 368 274

368.1736 369.1 275

379.2008 380.1 276

383.1401 384.2 277

440.2424 441.1 278

459.194 460.2 279

423.227 424.3 280

382.2117 383.1 281

396.2274 397.2 282

464.2148 465.1 283

460.1893 461.2 284

424.2223 425.3 285

493.2301 494.1 286

489.2046 490.3 287

453.2376 454.3 288

424.2474 425.3 289

492.2348 493.3 290

488.2093 489.2 291

439.2583 440.3 292

437.2791 438.3 293

436.2474 437.3 294

350.1743 351.1 295

360.1838 361.1 296

367.1696 368.2 297

488.2206 489.3 298

410.2318 411.1 299

382.2005 383.1 300

491.2508 492.1 301

487.2253 488.1 302

451.2583 452.3 303

477.2352 478.1 304

452.2424 453.3 305

351.1695 352.1 306

396.2161 397.2 307

424.2474 425.1 308

410.2318 411.1 309

425.2315 426.1 310

409.2478 410.3 311

413.2427 414.3 312

413.2427 301.1 313

439.2583 440.1 314

383.2321 384.1 315

425.2427 426.1 316

451.2195 452.3 317

361.179 362.1 318

376.1787 377.1 319

428.0848 429 320

369.2165 370.1 321

453.2628 454.2 322

493.2941 494.2 323

411.2158 412.3 324

424.2474 425.1 325

406.2117 407.3 326

448.2587 449.3 327

376.1787 377.2 328

381.2052 382.2 329

467.2784 468.2 330

499.2835 500.2 331

500.2787 501.2 332

410.2318 411.1 333

394.2369 395.3 334

394.2369 395.3 335

408.2525 409.1 336

383.1957 384.2

In certain embodiments, a provided compound is a compound listed in Table 1B, or a pharmaceutically acceptable salt thereof.

TABLE 1B Exemplary compounds Cmpd LCMS m/z No Structure Exact Mass (M + H) 337

387.2208 388.0 338

413.2063 414.1 340

454.258 455.3 341

395.2321 396.3 342

406.2117 407.3 343

403.2008 404.2 344

377.1739 378.2 345

411.2522 412.2 346

437.2678 438.3 347

409.2365 410.1 348

394.2369 395.1 349

465.274 466.3 350

381.2052 382.2 351

397.2114 398.1 352

385.2114 386.1 353

398.243 399.1 354

412.2587 413.1 355

381.2165 382.2 356

477.2352 478.2 357

424.2474 425.1 358

438.2631 439.2 359

465.2352 466.3 360

419.2209 420.3 361

433.2365 434.3 362

451.2835 452.1 363

453.2628 454.1 364

397.2114 398.2 365

397.2114 398.1 366

383.1957 384.2 367

383.1957 384.2 368

463.2471 464.3 369

477.2628 478.3 370

447.2522 448.3 371

437.2678 438.3 372

437.2678 438.3 373

423.2522 424.3 374

425.2678 426.3 375

463.2947 464.3 376

424.2587 425.1 377

424.2587 425.1 378

382.2005 383.1 379

473.2097 474.1 380

437.2427 438.2 381

392.1961 393.1 382

403.2008 404.2 383

423.2522 424.1 384

397.2365 398.2 385

411.2522 412.3 386

383.2209 384.3 387

439.2471 440.1 388

409.2365 410.2 389

425.2678 426.1 390

411.2522 412.2 391

397.2365 398.2 392

397.2365 398.2 393

464.29 465.3 394

481.2801 482.3 395

468.2485 469.1 396

411.2522 412.2 397

506.3369 507.2 398

506.3005 507.3 399

397.2114 398.1 400

409.2478 410.2 401

423.2634 424.1 402

491.2508 492.2 403

409.2478 410.3 404

385.1306 386.0 405

451.1831 452.1 406

466.2692 467.2 407

480.2849 481.1 408

480.2849 481.2 409

494.3005 495.2 410

494.3005 495.2 411

437.2791 438.2 412

403.2008 404.1 413

478.3056 479.3 414

466.2692 467.2 415

452.2536 453.2 416

452.2536 453.2 417

466.2692 467.2 418

478.2692 479.2 419

492.2849 493.2 420

384.2161 385.1 421

452.2035 453.2 422

401.1863 402.1 423

424.2587 425.2 424

466.2692 467.2 425

450.2379 451.2 429

327.1695 328.0 430

466.3056 467.3 431

393.1913 394.1 432

407.207 408.1 433

406.2117 407.2 434

396.2161 397.1 435

382.2005 383.1 436

382.2005 383.1 437

417.1568 418.0 438

438.2743 439.2 439

383.1957 384.2 440

438.2379 439.1 441

507.2958 508.3 442

522.3067 523.2 443

509.2751 510.2 444

423.227 424.2 445

478.2304 479.2 446

478.2304 479.2 447

467.2645 468.3 448

397.2114 398.1 449

425.2427 426.2 450

438.2379 439.1 451

452.2536 453.2 452

411.227 412.2 453

466.2805 467.2 454

465.274 466.2 455

491.2896 492.3 456

450.1991 451.1 457

466.2692 467.2 458

440.2536 441.2 459

454.2692 455.2 460

470.2642 471.2 461

467.2645 468.2 462

523.2907 524.3 463

537.3064 538.3 464

439.2583 440.2 465

413.2063 414.1 466

494.3118 495.2 467

440.2536 441.2 468

479.2896 480.2 469

479.2896 480.2 470

493.3053 494.2 471

493.3053 494.2 472

477.274 478.2 473

383.1957 384.1 474

492.2097 493.2 475

425.2063 426.2 476

469.2801 470.2 477

495.2958 496.3 478

509.3114 510.3 479

551.322 552.3 480

423.227 424.2 481

454.2805 455.2 482

468.2961 469.3 483

508.291 509.2 484

522.3067 523.3 485

534.3067 535.3 486

426.2379 427.1 487

410.243 411.2 488

437.2427 438.1 489

451.2583 452.1 490

449.2427 450.1 491

397.2114 398.2 492

397.2114 398.2 493

397.2114 398.2 494

426.2379 427.3 495

456.2485 457.1 496

525.3064 526.3 497

509.2751 510.2 498

535.2907 536.3 499

545.242 546.3 500

508.3274 509.3 501

412.2223 413.1 502

437.2539 438.1 503

451.2583 452.3 504

465.274 466.3 505

465.274 466.3 506

438.2379 439.2 507

452.2536 453.2 509

464.2536 465.2 511

492.2849 493.2 513

438.2379 439.2 515

452.2536 453.2 517

464.2536 465.2 519

492.2849 493.3 521

397.2114 398.2 522

438.2743 439.2 523

397.2114 398.2 524

438.2379 439.1 525

483.2958 484.3 526

438.2379 439.2 527

439.2583 440.3 528

482.3118 483.2 529

425.2539 426.2 530

463.2583 464.3 531

454.2329 455.2 532

467.2645 468.3 533

481.2801 482.3 534

424.2587 425.2 535

438.2743 439.2 536

466.2692 467.2 538

424.2587 425.2 540

438.2743 439.3 542

466.2692 467.3 544

397.2114 398.2 545

383.1957 384.1 546

480.2849 481.3 547

454.2329 455.3 548

383.1957 384.2 549

409.2478 410.2 550

467.2896 468.2 551

451.2583 452.2 552

492.2849 493.2 553

492.2849 493.3 554

401.1885 402.2 555

433.1784 434.1 556

415.2042 416.2 557

423.227 424.0 558

466.2692 467.3 559

411.227 412.3 560

455.2533 456.0 561

512.3111 512.2 562

512.3111 513.2 563

411.227 412.2 564

452.2536 453.2 565

381.2165 382.2 566

491.2896 492.2 567

495.2958 496.3 568

456.2307 457.3 569

516.2519 517.3 570

498.2777 499.3 571

452.2536 453.2 572

452.2536 453.2 573

397.2114 398.2 574

438.2379 439.2 575

395.2321 396.2 576

439.2583 440.3 577

463.2583 464.3 578

463.2583 464.3 579

482.3005 483.3 580

488.2206 489.2 581

470.2464 471.3 582

438.2379 439.1 583

438.2379 439.2 584

466.2692 467.3 585

425.2427 426.2 586

439.2583 440.3 587

480.2849 481.3 588

411.227 412.2 589

452.29 453.3 590

466.2692 467.3 591

424.2587 425.2 592

425.2427 426.2 593

452.29 453.2 594

466.2692 467.2 595

424.2587 425.2 596

452.2536 453.2 597

466.2692 467.2 598

480.2849 481.2 599

522.2955 523.2 600

451.2583 452.2 601

452.2536 453.3 602

466.2692 467.3 603

454.2692 455.3 604

397.2114 398.2 605

452.2536 453.3 606

480.2849 481.3 607

397.2114 398.2 608

438.2379 439.3 609

466.2692 467.3 610

494.3005 495.3 611

536.3111 537.3 612

549.3427 550.3 613

577.3377 578.4 614

538.3268 539.3 615

451.2583 452.2 616

522.2955 523.3 617

502.2362 503.2 618

453.274 454.2 619

411.227 412.2 620

425.2427 426.3 621

439.2332 440.3 622

453.2488 454.2 623

467.2645 468.2 624

439.2583 440.1 625

398.2066 399.2 626

493.2301 494.2 627

481.2689 482.1 628

538.3268 539.2 629

424.2223 425.2 630

438.2743 439.2 631

466.3056 467.2 632

480.2849 481.2 634

383.1957 384.2 635

423.227 424.2 636

449.2427 450.3 637

466.2692 467.3 638

477.274 478.2 639

484.262 485.3 640

530.2675 531.3 641

447.194 448.2 642

438.2379 439.1 661

438.2743 439.2 662

466.3056 467.3 663

438.2379 439.2 664

466.2692 467.3 665

465.274 466.3 666

397.2114 398.2 667

438.2379 439.3 668

466.2692 467.3 669

465.274 466.2 670

465.274 466.3 671

480.2849 481.0 672

538.3268 539.2 673

397.2114 398.2 674

438.2379 439.3 675

466.2692 467.3 676

438.2379 439.3 677

466.2692 467.0 678

536.3111 537.2 679

577.3377 578.3 680

467.2533 468.3 681

397.2114 398.2 682

465.274 466.3 683

397.2114 398.2 684

549.3427 550.3 685

494.3005 495.2 686

396.2274 397.2 687

452.2536 453.1 688

451.2583 452.1 689

410.243 411.1 690

438.2379 439.3 691

465.274 466.3 692

465.274 466.3 693

411.227 412.2 694

465.274 466.1 695

465.274 466.3 696

465.274 466.3

In certain embodiments, a provided compound is a compound listed in Table 1C, or a pharmaceutically acceptable salt thereof.

TABLE 1C Exemplary compounds LCMS Cmpd Exact m/z No Structure Mass (M + H) 646

397.2114 398.1 647

424.2587 425.2 648

438.2743 439.2 649

466.2692 467.2 650

492.2849 493.2

In certain embodiments, a provided compound is a compound listed in Table 1D, or a pharmaceutically acceptable salt thereof.

TABLE 1D Exemplary compounds LCMS Cmpd Exact m/z No Structure Mass (M + H) 651

367.2008 368.2 652

408.2274 409.2 653

436.2587 437.3 654

435.2634 436.3

In certain embodiments, a provided compound is a compound listed in Table 1E, or a pharmaceutically acceptable salt thereof.

TABLE 1E Exemplary compounds LCMS Cmpd Exact m/z No Structure Mass (M + H) 655

426.218 427.2 656

454.2493 455.3 657

381.2165 382.2 658

450.2743 451.3 659

422.243 423.2 660

449.2791 450.3 697

385.1914 386.0 698

453.254 454.3

In certain embodiments, a provided compound is a compound listed in Table 1F, or a pharmaceutically acceptable salt thereof.

TABLE 1F Exemplary Compounds LCMS Cmpd Exact m/z No Structure Mass (M + H) 699

423.2383 424.2 700

450.2743 451.3 701

451.2696 452.3

In certain embodiments, a provided compound is a compound listed in Table 1G, or a pharmaceutically acceptable salt thereof.

TABLE 1G Exemplary Compounds Cmpd Cmpd Cmpd No No No 702

464.2900 703

478.3056 704

492.2849 705

528.2519 706

503.2508 707

546.2930 708

518.3369 709

519.3322 710

520.3162 711

490.3056 712

504.3213 713

465.2852 714

479.3009 715

493.2801 716

529.2471 717

504.2461 718

547.2883 719

519.3322 720

520.3274 721

521.3114 722

491.3009 723

505.3165

In certain embodiments, a provided compound inhibits PRMT5. In certain embodiments, a provided compound inhibits wild-type PRMT5. In certain embodiments, a provided compound inhibits a mutant PRMT5. In certain embodiments, a provided compound inhibits PRMT5, e.g., as measured in an assay described herein. In certain embodiments, the PRMT5 is from a human. In certain embodiments, a provided compound inhibits PRMT5 at an IC₅₀ less than or equal to 10 μM. In certain embodiments, a provided compound inhibits PRMT5 at an IC₅₀ less than or equal to 1 μM. In certain embodiments, a provided compound inhibits PRMT5 at an IC₅₀ less than or equal to 0.1 μM. In certain embodiments, a provided compound inhibits PRMT5 in a cell at an EC₅₀ less than or equal to 10 μM. In certain embodiments, a provided compound inhibits PRMT5 in a cell at an EC₅₀ less than or equal to 1 μM. In certain embodiments, a provided compound inhibits PRMT5 in a cell at an EC₅₀ less than or equal to 0.1 μM. In certain embodiments, a provided compound inhibits cell proliferation at an EC₅₀ less than or equal to 10 μM. In certain embodiments, a provided compound inhibits cell proliferation at an EC₅₀ less than or equal to 1 μM. In certain embodiments, a provided compound inhibits cell proliferation at an EC₅₀ less than or equal to 0.1 μM. In some embodiments, a provided compound is selective for PRMT5 over other methyltransferases. In certain embodiments, a provided compound is at least about 10-fold selective, at least about 20-fold selective, at least about 30-fold selective, at least about 40-fold selective, at least about 50-fold selective, at least about 60-fold selective, at least about 70-fold selective, at least about 80-fold selective, at least about 90-fold selective, or at least about 100-fold selective for PRMT5 relative to one or more other methyltransferases.

It will be understood by one of ordinary skill in the art that the PRMT5 can be wild-type PRMT5, or any mutant or variant of PRMT5.

In some embodiments embodiment, the mutant or variant of PRMT5 contains one or more mutations (e.g., conservative substitutions). In some embodiments, provided herein is a PRMT5 point mutant. In some embodiments, the PRMT point mutant has an amino acid sequence that a degree of homology to the amino acid sequence of SEQ ID NO: 1 of at least about 80%, e.g., at least about 85%, at least about 90%, at least about 95%, or at least about 97%. Further provided is a protein that has a degree of homology to the amino acid sequence of SEQ ID NO: 2 of at least about 80%, e.g., at least about 85%, at least about 90%, at least about 95%, or at least about 97%.

In certain embodiments, the PRMT5 is isoform A (GenBank accession no. NP006100) (SEQ ID NO.:1):

MAAMAVGGAG GSRVSSGRDL NCVPEIADTL GAVAKQGFDF LCMPVFHPRF KREFIQEPAK NRPGPQTRSD LLLSGRDWNT LIVGKLSPWI RPDSKVEKIR RNSEAAMLQE LNFGAYLGLP AFLLPLNQED NTNLARVLTN HIHTGHHSSM FWMRVPLVAP EDLRDDIIEN APTTHTEEYS GEEKTWMWWH NFRTLCDYSK RIAVALEIGA DLPSNHVIDR WLGEPIKAAI LPTSIFLTNK KGFPVLSKMH QRLIFRLLKL EVQFIITGTN HHSEKEFCSY LQYLEYLSQN RPPPNAYELF AKGYEDYLQS PLQPLMDNLE SQTYEVFEKD PIKYSQYQQA IYKCLLDRVP EEEKDTNVQV LMVLGAGRGP LVNASLRAAK QADRRIKLYA VEKNPNAVVT LENWQFEEWG SQVTVVSSDM REWVAPEKAD IIVSELLGSF ADNELSPECL DGAQHFLKDD GVSIPGEYTS FLAPISSSKL YNEVRACREK DRDPEAQFEM PYVVRLHNFH QLSAPQPCFT FSHPNRDPMI DNNRYCTLEF PVEVNTVLHG FAGYFETVLY QDITLSIRPE THSPGMFSWF PILFPIKQPI TVREGQTICV RFWRCSNSKK VWYEWAVTAP VCSAIHNPTG RSYTIGL

In certain embodiments, the PRMT5 is isoform B (GenBank accession no. NP001034708) (SEQ ID NO.:2)

MRGPNSGTEK GRLVIPEKQG FDFLCMPVFH PRFKREFIQE PAKNRPGPQT RSDLLLSGRD WNTLIVGKLS PWIRPDSKVE KIRRNSEAAM LQELNFGAYL GLPAFLLPLN QEDNTNLARV LTNHIHTGHH SSMFWMRVPL VAPEDLRDDI IENAPTTHTE EYSGEEKTWM WWHNFRTLCD YSKRIAVALE IGADLPSNHV IDRWLGEPIK AAILPTSIFL TNKKGFPVLS KMHQRLIFRL LKLEVQFIIT GTNHHSEKEF CSYLQYLEYL SQNRPPPNAY ELFAKGYEDY LQSPLQPLMD NLESQTYEVF EKDPIKYSQY QQAIYKCLLD RVPEEEKDTN VQVLMVLGAG RGPLVNASLR AAKQADRRIK LYAVEKNPNA VVTLENWQFE EWGSQVTVVS SDMREWVAPE KADIIVSELL GSFADNELSP ECLDGAQHFL KDDGVSIPGE YTSFLAPISS SKLYNEVRAC REKDRDPEAQ FEMPYVVRLH NFHQLSAPQP CFTFSHPNRD PMIDNNRYCT LEFPVEVNTV LHGFAGYFET VLYQDITLSI RPETHSPGMF SWFPILFPIK QPITVREGQT ICVRFWRCSN SKKVWYEWAV TAPVCSAIHN PTGRSYTIGL

In certain embodiments, the PRMT5 is transcript variant 1 (GenBank accession no. NM_006109).

The present disclosure provides pharmaceutical compositions comprising a compound described herein, e.g., a compound of Formula (A), e.g., Formula (I), or a pharmaceutically acceptable salt thereof, as described herein, and optionally a pharmaceutically acceptable excipient. It will be understood by one of ordinary skill in the art that the compounds described herein, or salts thereof, may be present in various forms, such as amorphous, hydrates, solvates, or polymorphs. In certain embodiments, a provided composition comprises two or more compounds described herein. In certain embodiments, a compound described herein, or a pharmaceutically acceptable salt thereof, is provided in an effective amount in the pharmaceutical composition. In certain embodiments, the effective amount is a therapeutically effective amount. In certain embodiments, the effective amount is an amount effective for inhibiting PRMT5. In certain embodiments, the effective amount is an amount effective for treating a PRMT5-mediated disorder. In certain embodiments, the effective amount is a prophylactically effective amount. In certain embodiments, the effective amount is an amount effective to prevent a PRMT5-mediated disorder.

In certain embodiments, the provided pharmaceutical compositions comprise a compound described herein, e.g., a compound of Formula (A), e.g., Formula (I), or any subgenera thereof, e.g Formula (XV), (XVI), (XVII), (XVIII), (XV-a), (XVI-a), (XVII-a), (XVII-b), (XVIII-a), (XV-b), or (XV-c), and optionally a pharmaceutically acceptable excipient, wherein the compound is of a free base form. In certain embodiments, the provided pharmaceutical compositions comprise a compound described herein, e.g., a compound of Formula (A), e.g., Formula (I), or any subgenera thereof, e.g Formula (XV), (XVI), (XVII), (XVIII), (XV-a), (XVI-a), (XVII-a), (XVII-b), (XVIII-a), (XV-b), or (XV-c), and optionally a pharmaceutically acceptable excipient, wherein the compound is in the form of a pharmaceutically acceptablesalt as generally defined herein. In certain embodiments, the provided pharmaceutical compositions comprise a hydrochloride salt of a compound described herein and optionally a pharmaceutically acceptable excipient. In certain embodiments, the provided pharmaceutical compositions comprise a tartrate salt of a compound described herein and optionally a pharmaceutically acceptable excipient. In certain embodiments, the provided pharmaceutical compositions comprise a monotartrate salt of a compound described herein and optionally a pharmaceutically acceptable excipient. In certain embodiments, the provided pharmaceutical compositions comprise a bitartrate salt of a compound described herein and optionally a pharmaceutically acceptable excipient. In certain embodiments, the provided pharmaceutical compositions comprise a monotartrate salt and a bitartrate salt of a compound described herein and optionally a pharmaceutically acceptable excipient. In certain embodiments, the provided pharmaceutical compositions comprise a compound described herein in a form of free base, and a pharmaceutically acceptable salt thereof, and optionally a pharmaceutically acceptable excipient.

In certain embodiments, the provided pharmaceutical compositions comprise a compound of one of the following formulae in a free base form and optionally a pharmaceutically acceptable excipient:

In certain embodiments, the provided pharmaceutical compositions comprise a compound of one of the following formulae in the form of a pharmaceutically acceptable salt as generally defined herein and optionally a pharmaceutically acceptable excipient:

In certain embodiments, the provided pharmaceutical compositions comprise a hydrochloride salt of a compound of one of the following formulae and optionally a pharmaceutically acceptable excipient:

In certain embodiments, the provided pharmaceutical compositions comprising a tartrate salt of a compound of one of the following formulae and optionally a pharmaceutically acceptable excipient:

In certain embodiments, the tartrate salt is a monotartrate salt. In certain embodiments, the tartrate salt is a bitartrate salt. In certain embodiments, the provided pharmaceutical compositions comprises a monotartrate salt thereof, and a bitartrate salt thereof, and optionally a pharmaceutically acceptable excipient.

Pharmaceutically acceptable excipients include any and all solvents, diluents, or other liquid vehicles, dispersions, suspension aids, surface active agents, isotonic agents, thickening or emulsifying agents, preservatives, solid binders, lubricants, and the like, as suited to the particular dosage form desired. General considerations in formulation and/or manufacture of pharmaceutical compositions agents can be found, for example, in Remington's Pharmaceutical Sciences, Sixteenth Edition, E. W. Martin (Mack Publishing Co., Easton, Pa., 1980), and Remington: The Science and Practice of Pharmacy, 21st Edition (Lippincott Williams & Wilkins, 2005).

Pharmaceutical compositions described herein can be prepared by any method known in the art of pharmacology. In general, such preparatory methods include the steps of bringing a compound described herein (the “active ingredient”) into association with a carrier and/or one or more other accessory ingredients, and then, if necessary and/or desirable, shaping and/or packaging the product into a desired single- or multi-dose unit.

Pharmaceutical compositions can be prepared, packaged, and/or sold in bulk, as a single unit dose, and/or as a plurality of single unit doses. As used herein, a “unit dose” is discrete amount of the pharmaceutical composition comprising a predetermined amount of the active ingredient. The amount of the active ingredient is generally equal to the dosage of the active ingredient which would be administered to a subject and/or a convenient fraction of such a dosage such as, for example, one-half or one-third of such a dosage.

Relative amounts of the active ingredient, the pharmaceutically acceptable excipient, and/or any additional ingredients in a pharmaceutical composition of the present disclosure will vary, depending upon the identity, size, and/or condition of the subject treated and further depending upon the route by which the composition is to be administered. By way of example, the composition may comprise between 0.1% and 100% (w/w) active ingredient.

Pharmaceutically acceptable excipients used in the manufacture of provided pharmaceutical compositions include inert diluents, dispersing and/or granulating agents, surface active agents and/or emulsifiers, disintegrating agents, binding agents, preservatives, buffering agents, lubricating agents, and/or oils. Excipients such as cocoa butter and suppository waxes, coloring agents, coating agents, sweetening, flavoring, and perfuming agents may also be present in the composition.

Exemplary diluents include calcium carbonate, sodium carbonate, calcium phosphate, dicalcium phosphate, calcium sulfate, calcium hydrogen phosphate, sodium phosphate lactose, sucrose, cellulose, microcrystalline cellulose, kaolin, mannitol, sorbitol, inositol, sodium chloride, dry starch, cornstarch, powdered sugar, and mixtures thereof.

Exemplary granulating and/or dispersing agents include potato starch, corn starch, tapioca starch, sodium starch glycolate, clays, alginic acid, guar gum, citrus pulp, agar, bentonite, cellulose and wood products, natural sponge, cation-exchange resins, calcium carbonate, silicates, sodium carbonate, cross-linked poly(vinyl-pyrrolidone) (crospovidone), sodium carboxymethyl starch (sodium starch glycolate), carboxymethyl cellulose, cross-linked sodium carboxymethyl cellulose (croscarmellose), methylcellulose, pregelatinized starch (starch 1500), microcrystalline starch, water insoluble starch, calcium carboxymethyl cellulose, magnesium aluminum silicate (Veegum), sodium lauryl sulfate, quaternary ammonium compounds, and mixtures thereof.

Exemplary surface active agents and/or emulsifiers include natural emulsifiers (e.g., acacia, agar, alginic acid, sodium alginate, tragacanth, chondrux, cholesterol, xanthan, pectin, gelatin, egg yolk, casein, wool fat, cholesterol, wax, and lecithin), colloidal clays (e.g., bentonite (aluminum silicate) and Veegum (magnesium aluminum silicate)), long chain amino acid derivatives, high molecular weight alcohols (e.g., stearyl alcohol, cetyl alcohol, oleyl alcohol, triacetin monostearate, ethylene glycol distearate, glyceryl monostearate, and propylene glycol monostearate, polyvinyl alcohol), carbomers (e.g., carboxy polymethylene, polyacrylic acid, acrylic acid polymer, and carboxyvinyl polymer), carrageenan, cellulosic derivatives (e.g., carboxymethylcellulose sodium, powdered cellulose, hydroxymethyl cellulose, hydroxypropyl cellulose, hydroxypropyl methylcellulose, methylcellulose), sorbitan fatty acid esters (e.g., polyoxyethylene sorbitan monolaurate (Tween 20), polyoxyethylene sorbitan (Tween 60), polyoxyethylene sorbitan monooleate (Tween 80), sorbitan monopalmitate (Span 40), sorbitan monostearate (Span 60], sorbitan tristearate (Span 65), glyceryl monooleate, sorbitan monooleate (Span 80)), polyoxyethylene esters (e.g., polyoxyethylene monostearate (Myrj 45), polyoxyethylene hydrogenated castor oil, polyethoxylated castor oil, polyoxymethylene stearate, and Solutol), sucrose fatty acid esters, polyethylene glycol fatty acid esters (e.g., Cremophor™), polyoxyethylene ethers, (e.g., polyoxyethylene lauryl ether (Brij 30)), poly(vinyl-pyrrolidone), diethylene glycol monolaurate, triethanolamine oleate, sodium oleate, potassium oleate, ethyl oleate, oleic acid, ethyl laurate, sodium lauryl sulfate, Pluronic F68, Poloxamer 188, cetrimonium bromide, cetylpyridinium chloride, benzalkonium chloride, docusate sodium, and/or mixtures thereof.

Exemplary binding agents include starch (e.g., cornstarch and starch paste), gelatin, sugars (e.g., sucrose, glucose, dextrose, dextrin, molasses, lactose, lactitol, mannitol, etc.), natural and synthetic gums (e.g., acacia, sodium alginate, extract of Irish moss, panwar gum, ghatti gum, mucilage of isapol husks, carboxymethylcellulose, methylcellulose, ethylcellulose, hydroxyethylcellulose, hydroxypropyl cellulose, hydroxypropyl methylcellulose, microcrystalline cellulose, cellulose acetate, poly(vinyl-pyrrolidone), magnesium aluminum silicate (Veegum), and larch arabogalactan), alginates, polyethylene oxide, polyethylene glycol, inorganic calcium salts, silicic acid, polymethacrylates, waxes, water, alcohol, and/or mixtures thereof.

Exemplary preservatives include antioxidants, chelating agents, antimicrobial preservatives, antifungal preservatives, alcohol preservatives, acidic preservatives, and other preservatives.

Exemplary antioxidants include alpha tocopherol, ascorbic acid, acorbyl palmitate, butylated hydroxyanisole, butylated hydroxytoluene, monothioglycerol, potassium metabisulfite, propionic acid, propyl gallate, sodium ascorbate, sodium bisulfite, sodium metabisulfite, and sodium sulfite.

Exemplary chelating agents include ethylenediaminetetraacetic acid (EDTA) and salts and hydrates thereof (e.g., sodium edetate, disodium edetate, trisodium edetate, calcium disodium edetate, dipotassium edetate, and the like), citric acid and salts and hydrates thereof (e.g., citric acid monohydrate), fumaric acid and salts and hydrates thereof, malic acid and salts and hydrates thereof, phosphoric acid and salts and hydrates thereof, and tartaric acid and salts and hydrates thereof. Exemplary antimicrobial preservatives include benzalkonium chloride, benzethonium chloride, benzyl alcohol, bronopol, cetrimide, cetylpyridinium chloride, chlorhexidine, chlorobutanol, chlorocresol, chloroxylenol, cresol, ethyl alcohol, glycerin, hexetidine, imidurea, phenol, phenoxyethanol, phenylethyl alcohol, phenylmercuric nitrate, propylene glycol, and thimerosal.

Exemplary antifungal preservatives include butyl paraben, methyl paraben, ethyl paraben, propyl paraben, benzoic acid, hydroxybenzoic acid, potassium benzoate, potassium sorbate, sodium benzoate, sodium propionate, and sorbic acid.

Exemplary alcohol preservatives include ethanol, polyethylene glycol, phenol, phenolic compounds, bisphenol, chlorobutanol, hydroxybenzoate, and phenylethyl alcohol. Exemplary acidic preservatives include vitamin A, vitamin C, vitamin E, beta-carotene, citric acid, acetic acid, dehydroacetic acid, ascorbic acid, sorbic acid, and phytic acid.

Other preservatives include tocopherol, tocopherol acetate, deteroxime mesylate, cetrimide, butylated hydroxyanisol (BHA), butylated hydroxytoluened (BHT), ethylenediamine, sodium lauryl sulfate (SLS), sodium lauryl ether sulfate (SLES), sodium bisulfite, sodium metabisulfite, potassium sulfite, potassium metabisulfite, Glydant Plus, Phenonip, methylparaben, Germall 115, Germaben II, Neolone, Kathon, and Euxyl. In certain embodiments, the preservative is an anti-oxidant. In other embodiments, the preservative is a chelating agent.

Exemplary buffering agents include citrate buffer solutions, acetate buffer solutions, phosphate buffer solutions, ammonium chloride, calcium carbonate, calcium chloride, calcium citrate, calcium glubionate, calcium gluceptate, calcium gluconate, D-gluconic acid, calcium glycerophosphate, calcium lactate, propanoic acid, calcium levulinate, pentanoic acid, dibasic calcium phosphate, phosphoric acid, tribasic calcium phosphate, calcium hydroxide phosphate, potassium acetate, potassium chloride, potassium gluconate, potassium mixtures, dibasic potassium phosphate, monobasic potassium phosphate, potassium phosphate mixtures, sodium acetate, sodium bicarbonate, sodium chloride, sodium citrate, sodium lactate, dibasic sodium phosphate, monobasic sodium phosphate, sodium phosphate mixtures, tromethamine, magnesium hydroxide, aluminum hydroxide, alginic acid, pyrogen-free water, isotonic saline, Ringer's solution, ethyl alcohol, and mixtures thereof.

Exemplary lubricating agents include magnesium stearate, calcium stearate, stearic acid, silica, talc, malt, glyceryl behanate, hydrogenated vegetable oils, polyethylene glycol, sodium benzoate, sodium acetate, sodium chloride, leucine, magnesium lauryl sulfate, sodium lauryl sulfate, and mixtures thereof.

Exemplary natural oils include almond, apricot kernel, avocado, babassu, bergamot, black current seed, borage, cade, camomile, canola, caraway, camauba, castor, cinnamon, cocoa butter, coconut, cod liver, coffee, corn, cotton seed, emu, eucalyptus, evening primrose, fish, flaxseed, geraniol, gourd, grape seed, hazel nut, hyssop, isopropyl myristate, jojoba, kukui nut, lavandin, lavender, lemon, litsea cubeba, macademia nut, mallow, mango seed, meadowfoam seed, mink, nutmeg, olive, orange, orange roughy, palm, palm kernel, peach kernel, peanut, poppy seed, pumpkin seed, rapeseed, rice bran, rosemary, safflower, sandalwood, sasquana, savoury, sea buckthorn, sesame, shea butter, silicone, soybean, sunflower, tea tree, thistle, tsubaki, vetiver, walnut, and wheat germ oils. Exemplary synthetic oils include, but are not limited to, butyl stearate, caprylic triglyceride, capric triglyceride, cyclomethicone, diethyl sebacate, dimethicone 360, isopropyl myristate, mineral oil, octyldodecanol, oleyl alcohol, silicone oil, and mixtures thereof.

Liquid dosage forms for oral and parenteral administration include pharmaceutically acceptable emulsions, microemulsions, solutions, suspensions, syrups and elixirs. In addition to the active ingredients, the liquid dosage forms may comprise inert diluents commonly used in the art such as, for example, water or other solvents, solubilizing agents and emulsifiers such as ethyl alcohol, isopropyl alcohol, ethyl carbonate, ethyl acetate, benzyl alcohol, benzyl benzoate, propylene glycol, 1,3-butylene glycol, dimethylformamide, oils (e.g., cottonseed, groundnut, corn, germ, olive, castor, and sesame oils), glycerol, tetrahydrofurfuryl alcohol, polyethylene glycols and fatty acid esters of sorbitan, and mixtures thereof. Besides inert diluents, the oral compositions can include adjuvants such as wetting agents, emulsifying and suspending agents, sweetening, flavoring, and perfuming agents. In certain embodiments for parenteral administration, the compounds described herein are mixed with solubilizing agents such as Cremophor™, alcohols, oils, modified oils, glycols, polysorbates, cyclodextrins, polymers, and mixtures thereof.

Injectable preparations, for example, sterile injectable aqueous or oleaginous suspensions can be formulated according to the known art using suitable dispersing or wetting agents and suspending agents. The sterile injectable preparation can be a sterile injectable solution, suspension or emulsion in a nontoxic parenterally acceptable diluent or solvent, for example, as a solution in 1,3-butanediol. Among the acceptable vehicles and solvents that can be employed are water, Ringer's solution, U.S.P. and isotonic sodium chloride solution. In addition, sterile, fixed oils are conventionally employed as a solvent or suspending medium. For this purpose any bland fixed oil can be employed including synthetic mono- or diglycerides. In addition, fatty acids such as oleic acid are used in the preparation of injectables.

The injectable formulations can be sterilized, for example, by filtration through a bacterial-retaining filter, or by incorporating sterilizing agents in the form of sterile solid compositions which can be dissolved or dispersed in sterile water or other sterile injectable medium prior to use.

In order to prolong the effect of a drug, it is often desirable to slow the absorption of the drug from subcutaneous or intramuscular injection. This can be accomplished by the use of a liquid suspension of crystalline or amorphous material with poor water solubility. The rate of absorption of the drug then depends upon its rate of dissolution which, in turn, may depend upon crystal size and crystalline form. Alternatively, delayed absorption of a parenterally administered drug form is accomplished by dissolving or suspending the drug in an oil vehicle.

Compositions for rectal or vaginal administration are typically suppositories which can be prepared by mixing the compounds described herein with suitable non-irritating excipients or carriers such as cocoa butter, polyethylene glycol or a suppository wax which are solid at ambient temperature but liquid at body temperature and therefore melt in the rectum or vaginal cavity and release the active ingredient.

Solid dosage forms for oral administration include capsules, tablets, pills, powders, and granules. In such solid dosage forms, the active ingredient is mixed with at least one inert, pharmaceutically acceptable excipient or carrier such as sodium citrate or dicalcium phosphate and/or a) fillers or extenders such as starches, lactose, sucrose, glucose, mannitol, and silicic acid, b) binders such as, for example, carboxymethylcellulose, alginates, gelatin, polyvinylpyrrolidinone, sucrose, and acacia, c) humectants such as glycerol, d) disintegrating agents such as agar, calcium carbonate, potato or tapioca starch, alginic acid, certain silicates, and sodium carbonate, e) solution retarding agents such as paraffin, f) absorption accelerators such as quaternary ammonium compounds, g) wetting agents such as, for example, cetyl alcohol and glycerol monostearate, h) absorbents such as kaolin and bentonite clay, and i) lubricants such as talc, calcium stearate, magnesium stearate, solid polyethylene glycols, sodium lauryl sulfate, and mixtures thereof. In the case of capsules, tablets and pills, the dosage form may comprise buffering agents.

Solid compositions of a similar type can be employed as fillers in soft and hard-filled gelatin capsules using such excipients as lactose or milk sugar as well as high molecular weight polyethylene glycols and the like. The solid dosage forms of tablets, dragees, capsules, pills, and granules can be prepared with coatings and shells such as enteric coatings and other coatings well known in the pharmaceutical formulating art. They may optionally comprise opacifying agents and can be of a composition that they release the active ingredient(s) only, or preferentially, in a certain part of the intestinal tract, optionally, in a delayed manner. Examples of embedding compositions which can be used include polymeric substances and waxes. Solid compositions of a similar type can be employed as fillers in soft and hard-filled gelatin capsules using such excipients as lactose or milk sugar as well as high molecular weight polyethylene glycols and the like.

The active ingredient can be in micro-encapsulated form with one or more excipients as noted above. The solid dosage forms of tablets, dragees, capsules, pills, and granules can be prepared with coatings and shells such as enteric coatings, release controlling coatings and other coatings well known in the pharmaceutical formulating art. In such solid dosage forms the active ingredient can be admixed with at least one inert diluent such as sucrose, lactose, or starch. Such dosage forms may comprise, as is normal practice, additional substances other than inert diluents, e.g., tableting lubricants and other tableting aids such a magnesium stearate and microcrystalline cellulose. In the case of capsules, tablets, and pills, the dosage forms may comprise buffering agents. They may optionally comprise opacifying agents and can be of a composition that they release the active ingredient(s) only, or preferentially, in a certain part of the intestinal tract, optionally, in a delayed manner. Examples of embedding compositions which can be used include polymeric substances and waxes.

Dosage forms for topical and/or transdermal administration of a provided compound may include ointments, pastes, creams, lotions, gels, powders, solutions, sprays, inhalants and/or patches. Generally, the active ingredient is admixed under sterile conditions with a pharmaceutically acceptable carrier and/or any desired preservatives and/or buffers as can be required. Additionally, the present disclosure encompasses the use of transdermal patches, which often have the added advantage of providing controlled delivery of an active ingredient to the body. Such dosage forms can be prepared, for example, by dissolving and/or dispensing the active ingredient in the proper medium. Alternatively or additionally, the rate can be controlled by either providing a rate controlling membrane and/or by dispersing the active ingredient in a polymer matrix and/or gel.

Suitable devices for use in delivering intradermal pharmaceutical compositions described herein include short needle devices such as those described in U.S. Pat. Nos. 4,886,499; 5,190,521; 5,328,483; 5,527,288; 4,270,537; 5,015,235; 5,141,496; and 5,417,662. Intradermal compositions can be administered by devices which limit the effective penetration length of a needle into the skin, such as those described in PCT publication WO 99/34850 and functional equivalents thereof. Jet injection devices which deliver liquid vaccines to the dermis via a liquid jet injector and/or via a needle which pierces the stratum corneum and produces a jet which reaches the dermis are suitable. Jet injection devices are described, for example, in U.S. Pat. Nos. 5,480,381; 5,599,302; 5,334,144; 5,993,412; 5,649,912; 5,569,189; 5,704,911; 5,383,851; 5,893,397; 5,466,220; 5,339,163; 5,312,335; 5,503,627; 5,064,413; 5,520,639; 4,596,556; 4,790,824; 4,941,880; 4,940,460; and PCT publications WO 97/37705 and WO 97/13537. Ballistic powder/particle delivery devices which use compressed gas to accelerate vaccine in powder form through the outer layers of the skin to the dermis are suitable. Alternatively or additionally, conventional syringes can be used in the classical mantoux method of intradermal administration.

Formulations suitable for topical administration include, but are not limited to, liquid and/or semi liquid preparations such as liniments, lotions, oil in water and/or water in oil emulsions such as creams, ointments and/or pastes, and/or solutions and/or suspensions. Topically-administrable formulations may, for example, comprise from about 1% to about 10% (w/w) active ingredient, although the concentration of the active ingredient can be as high as the solubility limit of the active ingredient in the solvent. Formulations for topical administration may further comprise one or more of the additional ingredients described herein.

A provided pharmaceutical composition can be prepared, packaged, and/or sold in a formulation suitable for pulmonary administration via the buccal cavity. Such a formulation may comprise dry particles which comprise the active ingredient and which have a diameter in the range from about 0.5 to about 7 nanometers or from about 1 to about 6 nanometers. Such compositions are conveniently in the form of dry powders for administration using a device comprising a dry powder reservoir to which a stream of propellant can be directed to disperse the powder and/or using a self propelling solvent/powder dispensing container such as a device comprising the active ingredient dissolved and/or suspended in a low-boiling propellant in a sealed container. Such powders comprise particles wherein at least 98% of the particles by weight have a diameter greater than 0.5 nanometers and at least 95% of the particles by number have a diameter less than 7 nanometers. Alternatively, at least 95% of the particles by weight have a diameter greater than 1 nanometer and at least 90% of the particles by number have a diameter less than 6 nanometers. Dry powder compositions may include a solid fine powder diluent such as sugar and are conveniently provided in a unit dose form.

Low boiling propellants generally include liquid propellants having a boiling point of below 65° F. at atmospheric pressure. Generally the propellant may constitute 50 to 99.9% (w/w) of the composition, and the active ingredient may constitute 0.1 to 20% (w/w) of the composition. The propellant may further comprise additional ingredients such as a liquid non-ionic and/or solid anionic surfactant and/or a solid diluent (which may have a particle size of the same order as particles comprising the active ingredient).

Pharmaceutical compositions formulated for pulmonary delivery may provide the active ingredient in the form of droplets of a solution and/or suspension. Such formulations can be prepared, packaged, and/or sold as aqueous and/or dilute alcoholic solutions and/or suspensions, optionally sterile, comprising the active ingredient, and may conveniently be administered using any nebulization and/or atomization device. Such formulations may further comprise one or more additional ingredients including, but not limited to, a flavoring agent such as saccharin sodium, a volatile oil, a buffering agent, a surface active agent, and/or a preservative such as methylhydroxybenzoate. The droplets provided by this route of administration may have an average diameter in the range from about 0.1 to about 200 nanometers.

Formulations described herein as being useful for pulmonary delivery are useful for intranasal delivery of a pharmaceutical composition. Another formulation suitable for intranasal administration is a coarse powder comprising the active ingredient and having an average particle from about 0.2 to 500 micrometers. Such a formulation is administered by rapid inhalation through the nasal passage from a container of the powder held close to the nares.

Formulations for nasal administration may, for example, comprise from about as little as 0.1% (w/w) and as much as 100% (w/w) of the active ingredient, and may comprise one or more of the additional ingredients described herein. A provided pharmaceutical composition can be prepared, packaged, and/or sold in a formulation for buccal administration. Such formulations may, for example, be in the form of tablets and/or lozenges made using conventional methods, and may contain, for example, 0.1 to 20% (w/w) active ingredient, the balance comprising an orally dissolvable and/or degradable composition and, optionally, one or more of the additional ingredients described herein. Alternately, formulations for buccal administration may comprise a powder and/or an aerosolized and/or atomized solution and/or suspension comprising the active ingredient. Such powdered, aerosolized, and/or aerosolized formulations, when dispersed, may have an average particle and/or droplet size in the range from about 0.1 to about 200 nanometers, and may further comprise one or more of the additional ingredients described herein.

A provided pharmaceutical composition can be prepared, packaged, and/or sold in a formulation for ophthalmic administration. Such formulations may, for example, be in the form of eye drops including, for example, a 0.1/1.0% (w/w) solution and/or suspension of the active ingredient in an aqueous or oily liquid carrier. Such drops may further comprise buffering agents, salts, and/or one or more other of the additional ingredients described herein. Other opthalmically-administrable formulations which are useful include those which comprise the active ingredient in microcrystalline form and/or in a liposomal preparation. Ear drops and/or eye drops are contemplated as being within the scope of this disclosure.

Although the descriptions of pharmaceutical compositions provided herein are principally directed to pharmaceutical compositions which are suitable for administration to humans, it will be understood by the skilled artisan that such compositions are generally suitable for administration to animals of all sorts. Modification of pharmaceutical compositions suitable for administration to humans in order to render the compositions suitable for administration to various animals is well understood, and the ordinarily skilled veterinary pharmacologist can design and/or perform such modification with ordinary experimentation.

Compounds provided herein are typically formulated in dosage unit form for ease of administration and uniformity of dosage. It will be understood, however, that the total daily usage of provided compositions will be decided by the attending physician within the scope of sound medical judgment. The specific therapeutically effective dose level for any particular subject or organism will depend upon a variety of factors including the disease, disorder, or condition being treated and the severity of the disorder; the activity of the specific active ingredient employed; the specific composition employed; the age, body weight, general health, sex and diet of the subject; the time of administration, route of administration, and rate of excretion of the specific active ingredient employed; the duration of the treatment; drugs used in combination or coincidental with the specific active ingredient employed; and like factors well known in the medical arts.

The compounds and compositions provided herein can be administered by any route, including enteral (e.g., oral), parenteral, intravenous, intramuscular, intra-arterial, intramedullary, intrathecal, subcutaneous, intraventricular, transdermal, interdermal, rectal, intravaginal, intraperitoneal, topical (as by powders, ointments, creams, and/or drops), mucosal, nasal, bucal, sublingual; by intratracheal instillation, bronchial instillation, and/or inhalation; and/or as an oral spray, nasal spray, and/or aerosol. Specifically contemplated routes are oral administration, intravenous administration (e.g., systemic intravenous injection), regional administration via blood and/or lymph supply, and/or direct administration to an affected site. In general the most appropriate route of administration will depend upon a variety of factors including the nature of the agent (e.g., its stability in the environment of the gastrointestinal tract), and/or the condition of the subject (e.g., whether the subject is able to tolerate oral administration).

The exact amount of a compound required to achieve an effective amount will vary from subject to subject, depending, for example, on species, age, and general condition of a subject, severity of the side effects or disorder, identity of the particular compound(s), mode of administration, and the like. The desired dosage can be delivered three times a day, two times a day, once a day, every other day, every third day, every week, every two weeks, every three weeks, or every four weeks. In certain embodiments, the desired dosage can be delivered using multiple administrations (e.g., two, three, four, five, six, seven, eight, nine, ten, eleven, twelve, thirteen, fourteen, or more administrations).

In certain embodiments, an effective amount of a compound for administration one or more times a day to a 70 kg adult human may comprise about 0.0001 mg to about 3000 mg, about 0.0001 mg to about 2000 mg, about 0.0001 mg to about 1000 mg, about 0.001 mg to about 1000 mg, about 0.01 mg to about 1000 mg, about 0.1 mg to about 1000 mg, about 1 mg to about 1000 mg, about 1 mg to about 100 mg, about 10 mg to about 1000 mg, or about 100 mg to about 1000 mg, of a compound per unit dosage form.

In certain embodiments, a compound described herein may be administered at dosage levels sufficient to deliver from about 0.001 mg/kg to about 1000 mg/kg, from about 0.01 mg/kg to about mg/kg, from about 0.1 mg/kg to about 40 mg/kg, from about 0.5 mg/kg to about 30 mg/kg, from about 0.01 mg/kg to about 10 mg/kg, from about 0.1 mg/kg to about 10 mg/kg, or from about 1 mg/kg to about 25 mg/kg, of subject body weight per day, one or more times a day, to obtain the desired therapeutic effect.

In some embodiments, a compound described herein is administered one or more times per day, for multiple days. In some embodiments, the dosing regimen is continued for days, weeks, months, or years.

It will be appreciated that dose ranges as described herein provide guidance for the administration of provided pharmaceutical compositions to an adult. The amount to be administered to, for example, a child or an adolescent can be determined by a medical practitioner or person skilled in the art and can be lower or the same as that administered to an adult.

It will be also appreciated that a compound or composition, as described herein, can be administered in combination with one or more additional therapeutically active agents. In certain embodiments, a compound or composition provided herein is administered in combination with one or more additional therapeutically active agents that improve its bioavailability, reduce and/or modify its metabolism, inhibit its excretion, and/or modify its distribution within the body. It will also be appreciated that the therapy employed may achieve a desired effect for the same disorder, and/or it may achieve different effects.

The compound or composition can be administered concurrently with, prior to, or subsequent to, one or more additional therapeutically active agents. In certain embodiments, the additional therapeutically active agent is a compound of Formula (A), e.g., Formula (I). In certain embodiments, the additional therapeutically active agent is not a compound of Formula (A), e.g., Formula (I). In general, each agent will be administered at a dose and/or on a time schedule determined for that agent. In will further be appreciated that the additional therapeutically active agent utilized in this combination can be administered together in a single composition or administered separately in different compositions. The particular combination to employ in a regimen will take into account compatibility of a provided compound with the additional therapeutically active agent and/or the desired therapeutic effect to be achieved. In general, it is expected that additional therapeutically active agents utilized in combination be utilized at levels that do not exceed the levels at which they are utilized individually. In some embodiments, the levels utilized in combination will be lower than those utilized individually.

Exemplary additional therapeutically active agents include, but are not limited to, small organic molecules such as drug compounds (e.g., compounds approved by the U.S. Food and Drug Administration as provided in the Code of Federal Regulations (CFR)), peptides, proteins, carbohydrates, monosaccharides, oligosaccharides, polysaccharides, nucleoproteins, mucoproteins, lipoproteins, synthetic polypeptides or proteins, small molecules linked to proteins, glycoproteins, steroids, nucleic acids, DNAs, RNAs, nucleotides, nucleosides, oligonucleotides, antisense oligonucleotides, lipids, hormones, vitamins, and cells.

Also encompassed by the present discosure are kits (e.g., pharmaceutical packs). The kits provided may comprise a provided pharmaceutical composition or compound and a container (e.g., a vial, ampule, bottle, syringe, and/or dispenser package, or other suitable container). In some embodiments, provided kits may optionally further include a second container comprising a pharmaceutical excipient for dilution or suspension of a provided pharmaceutical composition or compound. In some embodiments, a provided pharmaceutical composition or compound provided in the container and the second container are combined to form one unit dosage form. In some embodiments, a provided kits further includes instructions for use.

Compounds and compositions described herein are generally useful for the inhibition of PRMT5. In some embodiments, methods of treating PRMT5-mediated disorder in a subject are provided which comprise administering an effective amount of a compound described herein (e.g., a compound of Formula (A), e.g., Formula (I)), or a pharmaceutically acceptable salt thereof), to a subject in need of treatment. In certain embodiments, the effective amount is a therapeutically effective amount. In certain embodiments, the effective amount is a prophylactically effective amount. In certain embodiments, the subject is suffering from a PRMT5-mediated disorder. In certain embodiments, the subject is susceptible to a PRMT5-mediated disorder.

As used herein, the term “PRMT5-mediated disorder” means any disease, disorder, or other pathological condition in which PRMT5 is known to play a role. Accordingly, in some embodiments, the present disclosure relates to treating or lessening the severity of one or more diseases in which PRMT5 is known to play a role.

In some embodiments, the present disclosure provides a method of inhibiting PRMT5 comprising contacting PRMT5 with an effective amount of a compound described herein (e.g., a compound of Formula (A), e.g., Formula (I)), or a pharmaceutically acceptable salt thereof. The PRMT5 may be purified or crude, and may be present in a cell, tissue, or subject. Thus, such methods encompass both inhibition of in vitro and in vivo PRMT5 activity. In certain embodiments, the method is an in vitro method, e.g., such as an assay method. It will be understood by one of ordinary skill in the art that inhibition of PRMT5 does not necessarily require that all of the PRMT5 be occupied by an inhibitor at once. Exemplary levels of inhibition of PRMT5 include at least 10% inhibition, about 10% to about 25% inhibition, about 25% to about 50% inhibition, about 50% to about 75% inhibition, at least 50% inhibition, at least 75% inhibition, about 80% inhibition, about 90% inhibition, and greater than 90% inhibition.

In some embodiments, provided is a method of inhibiting PRMT5 activity in a subject in need thereof comprising administering to the subject an effective amount of a compound described herein (e.g., a compound of Formula (A), e.g., Formula (I)), or a pharmaceutically acceptable salt thereof, or a pharmaceutical composition thereof.

In certain embodiments, provided is a method of altering gene expression in a cell which comprises contacting a cell with an effective amount of a compound of Formula (A), e.g., Formula (I), or a pharmaceutically acceptable salt thereof. In certain embodiments, the cell in culture in vitro. In certain embodiments, the cell is in an animal, e.g., a human. In certain embodiments, the cell is in a subject in need of treatment.

In certain embodiments, provided is a method of altering transcription in a cell which comprises contacting a cell with an effective amount of a compound of Formula (A), e.g., Formula (I), or a pharmaceutically acceptable salt thereof. In certain embodiments, the cell in culture in vitro. In certain embodiments, the cell is in an animal, e.g., a human. In certain embodiments, the cell is in a subject in need of treatment.

In certain embodiments, a method is provided of selecting a therapy for a subject having a disease associated with PRMT5-mediated disorder or mutation comprising the steps of determining the presence of PRMT5-mediated disorder or gene mutation in the PRMT5 gene or and selecting, based on the presence of PRMT5-mediated disorder a gene mutation in the PRMT5 gene a therapy that includes the administration of a provided compound. In certain embodiments, the disease is cancer.

In certain embodiments, a method of treatment is provided for a subject in need thereof comprising the steps of determining the presence of PRMT5-mediated disorder or a gene mutation in the PRMT5 gene and treating the subject in need thereof, based on the presence of a PRMT5-mediated disorder or gene mutation in the PRMT5 gene with a therapy that includes the administration of a provided compound. In certain embodiments, the subject is a cancer patient.

In some embodiments, a provided compound is useful in treating a proliferative disorder, such as cancer, a benign neoplasm, an autoimmune disease, or an inflammatory disease. For example, while not being bound to any particular mechanism, PRMT5 has been shown to be involved in cyclin D1 dysregulated cancers. Increased PRMT5 activity mediates key events associated with cyclin D1-dependent neoplastic growth including CUL4 repression, CDT1 overexpression, and DNA re-replication. Further, human cancers harboring mutations in Fbx4, the cyclin D1 E3 ligase, exhibit nuclear cyclin D1 accumulation and increased PRMT5 activity. See, e.g., Aggarwal et al., Cancer Cell. (2010) 18(4):329-40. Additionally, PRMT5 has also been implicated in accelerating cell cycle progression through G1 phase and modulating regulators of G1; for example, PRMT5 may upregulate cyclin-dependent kinase (CDK) 4, CDK6, and cyclins D1, D2 and E1. Moreover, PRMT5 may activate phosphoinositide 3-kinase (PI3K)/AKT signaling. See, e.g., Wei et al., Cancer Sci. (2012) 103(9): 1640-50. PRMT5 has been reported to play a role in apoptosis through methylation of E2F-1. See, e.g., Cho et al., EMBO J. (2012) 31:1785-1797; Zheng et al., Mol. Cell. (2013) 52:37-51. PRMT5 has been reported to be an essential regulator of splicing and affect the alternative splicing of ‘sensor’ mRNAs that can then lead to defects in downstream events such as apoptosis. See, e.g., Bezzi et al., Genes Dev. (2013) 27:1903-1916. PRMT5 has been reported to play a role in the RAS-ERK pathway. See, e.g., Andrew-Perez et al., Sci Signal. (2011) Sep. 13; 4(190)ra58 doi: 10.1126/scisignal.2001936. PRMT5 has been reported to affect C/EBPb target genes through interaction with the Mediator complex and hence affect cellular differentiation and inflammatory response. See, e.g., Tsutsui et al., J. Biol. Chem. (2013) 288:20955-20965. PRMT5 has been shown to methylate HOXA9 essential for ELAM expression during the EC inflammatory response. See, e.g., Bandyopadhyay et al., Mol. Cell. Biol. (2012) 32:1202-1203. Thus in some embodiments, the inhibition of PRMT5 by a provided compound is useful in treating the following non-limiting list of cancers: breast cancer, esophageal cancer, bladder cancer, lung cancer, hematopoietic cancer, lymphoma, medulloblastoma, rectum adenocarcinoma, colon adenocarcinoma, gastric cancer, pancreatic cancer, liver cancer, adenoid cystic carcinoma, lung adenocarcinoma, head and neck squamous cell carcinoma, brain tumors, hepatocellular carcinoma, renal cell carcinoma, melanoma, oligodendroglioma, ovarian clear cell carcinoma, and ovarian serous cystadenocarcinoma. See, e.g., Pal et al., EMBO J. (2007) 26:3558-3569 (mantle cell lymphoma); Wang et al., Mol. Cell Biol. (2008) 28:6262-77 (chronic lymphocytic leukemia (CLL)); and Tae et al., Nucleic Acids Res. (2011) 39:5424-5438.

In some embodiments, the inhibition of PRMT5 by a provided compound is useful in treating prostate cancer and lung cancer, in which PRMT5 has been shown to play a role. See, e.g., Gu et al., PLoS One 2012; 7(8):e44033; Gu et al., Biochem. J. (2012) 446:235-241. In some embodiments, a provided compound is useful to delay the onset of, slow the progression of, or ameliorate the symptoms of cancer. In some embodiments, a provided compound is administered in combination with other compounds, drugs, or therapeutics to treat cancer.

In some embodiments, compounds described herein are useful for treating a cancer including, but not limited to, acoustic neuroma, adenocarcinoma, adrenal gland cancer, anal cancer, angiosarcoma (e.g., lymphangiosarcoma, lymphangioendotheliosarcoma, hemangiosarcoma), appendix cancer, benign monoclonal gammopathy, biliary cancer (e.g., cholangiocarcinoma), bladder cancer, breast cancer (e.g., adenocarcinoma of the breast, papillary carcinoma of the breast, mammary cancer, medullary carcinoma of the breast), brain cancer (e.g., meningioma; glioma, e.g., astrocytoma, oligodendroglioma; medulloblastoma), bronchus cancer, carcinoid tumor, cervical cancer (e.g., cervical adenocarcinoma), choriocarcinoma, chordoma, craniopharyngioma, colorectal cancer (e.g., colon cancer, rectal cancer, colorectal adenocarcinoma), epithelial carcinoma, ependymoma, endotheliosarcoma (e.g., Kaposi's sarcoma, multiple idiopathic hemorrhagic sarcoma), endometrial cancer (e.g., uterine cancer, uterine sarcoma), esophageal cancer (e.g., adenocarcinoma of the esophagus, Barrett's adenocarinoma), Ewing sarcoma, eye cancer (e.g., intraocular melanoma, retinoblastoma), familiar hypereosinophilia, gall bladder cancer, gastric cancer (e.g., stomach adenocarcinoma), gastrointestinal stromal tumor (GIST), head and neck cancer (e.g., head and neck squamous cell carcinoma, oral cancer (e.g., oral squamous cell carcinoma (OSCC), throat cancer (e.g., laryngeal cancer, pharyngeal cancer, nasopharyngeal cancer, oropharyngeal cancer)), hematopoietic cancers (e.g., leukemia such as acute lymphocytic leukemia (ALL) (e.g., B-cell ALL, T-cell ALL), acute myelocytic leukemia (AML) (e.g., B-cell AML, T-cell AML), chronic myelocytic leukemia (CML) (e.g., B-cell CML, T-cell CML), and chronic lymphocytic leukemia (CLL) (e.g., B-cell CLL, T-cell CLL); lymphoma such as Hodgkin lymphoma (HL) (e.g., B-cell HL, T-cell HL) and non-Hodgkin lymphoma (NHL) (e.g., B-cell NHL such as diffuse large cell lymphoma (DLCL) (e.g., diffuse large B-cell lymphoma (DLBCL)), follicular lymphoma, chronic lymphocytic leukemia/small lymphocytic lymphoma (CLL/SLL), mantle cell lymphoma (MCL), marginal zone B-cell lymphomas (e.g., mucosa-associated lymphoid tissue (MALT) lymphomas, nodal marginal zone B-cell lymphoma, splenic marginal zone B-cell lymphoma), primary mediastinal B-cell lymphoma, Burkitt lymphoma, lymphoplasmacytic lymphoma (i.e., “Waldenstrom's macroglobulinemia”), hairy cell leukemia (HCL), immunoblastic large cell lymphoma, precursor B-lymphoblastic lymphoma and primary central nervous system (CNS) lymphoma; and T-cell NHL such as precursor T-lymphoblastic lymphoma/leukemia, peripheral T-cell lymphoma (PTCL) (e.g., cutaneous T-cell lymphoma (CTCL) (e.g., mycosis fungiodes, Sezary syndrome), angioimmunoblastic T-cell lymphoma, extranodal natural killer T-cell lymphoma, enteropathy type T-cell lymphoma, subcutaneous panniculitis-like T-cell lymphoma, anaplastic large cell lymphoma); a mixture of one or more leukemia/lymphoma as described above; and multiple myeloma (MM)), heavy chain disease (e.g., alpha chain disease, gamma chain disease, mu chain disease), hemangioblastoma, inflammatory myofibroblastic tumors, immunocytic amyloidosis, kidney cancer (e.g., nephroblastoma a.k.a. Wilms' tumor, renal cell carcinoma), liver cancer (e.g., hepatocellular cancer (HCC), malignant hepatoma), lung cancer (e.g., bronchogenic carcinoma, small cell lung cancer (SCLC), non-small cell lung cancer (NSCLC), adenocarcinoma of the lung), leiomyosarcoma (LMS), mastocytosis (e.g., systemic mastocytosis), myelodysplastic syndrome (MDS), mesothelioma, myeloproliferative disorder (MPD) (e.g., polycythemia Vera (PV), essential thrombocytosis (ET), agnogenic myeloid metaplasia (AMM) a.k.a. myelofibrosis (MF), chronic idiopathic myelofibrosis, chronic myelocytic leukemia (CML), chronic neutrophilic leukemia (CNL), hypereosinophilic syndrome (HES)), neuroblastoma, neurofibroma (e.g., neurofibromatosis (NF) type 1 or type 2, schwannomatosis), neuroendocrine cancer (e.g., gastroenteropancreatic neuroendoctrine tumor (GEP-NET), carcinoid tumor), osteosarcoma, ovarian cancer (e.g., cystadenocarcinoma, ovarian embryonal carcinoma, ovarian adenocarcinoma), papillary adenocarcinoma, pancreatic cancer (e.g., pancreatic andenocarcinoma, intraductal papillary mucinous neoplasm (IPMN), Islet cell tumors), penile cancer (e.g., Paget's disease of the penis and scrotum), pinealoma, primitive neuroectodermal tumor (PNT), prostate cancer (e.g., prostate adenocarcinoma), rectal cancer, rhabdomyosarcoma, salivary gland cancer, skin cancer (e.g., squamous cell carcinoma (SCC), keratoacanthoma (KA), melanoma, basal cell carcinoma (BCC)), small bowel cancer (e.g., appendix cancer), soft tissue sarcoma (e.g., malignant fibrous histiocytoma (MFH), liposarcoma, malignant peripheral nerve sheath tumor (MPNST), chondrosarcoma, fibrosarcoma, myxosarcoma), sebaceous gland carcinoma, sweat gland carcinoma, synovioma, testicular cancer (e.g., seminoma, testicular embryonal carcinoma), thyroid cancer (e.g., papillary carcinoma of the thyroid, papillary thyroid carcinoma (PTC), medullary thyroid cancer), urethral cancer, vaginal cancer, and vulvar cancer (e.g., Paget's disease of the vulva).

In some embodiments, a provided compound is useful in treating a metabolic disorder, such as diabetes or obesity. For example, while not being bound to any particular mechanism, a role for PRMT5 has been recognized in adipogenesis. Inhibition of PRMT5 expression in multiple cell culture models for adipogenesis prevented the activation of adipogenic genes, while overexpression of PRMT5 enhanced adipogenic gene expression and differentiation. See, e.g., LeBlanc et al., Mol Endocrinol. (2012) 26:583-597. Additionally, it has been shown that adipogenesis plays a pivotal role in the etiology and progression of diabetes and obesity. See, e.g., Camp et al., Trends Mol Med. (2002) 8:442-447. Thus in some embodiments, the inhibition of PRMT5 by a provided compound is useful in treating diabetes and/or obesity.

In some embodiments, a provided compound is useful to delay the onset of, slow the progression of, or ameliorate the symptoms of, diabetes. In some embodiments, the diabetes is Type 1 diabetes. In some embodiments, the diabetes is Type 2 diabetes. In some embodiments, a provided compound is useful to delay the onset of, slow the progression of, or ameliorate the symptoms of, obesity. In some embodiments, a provided compound is useful to help a subject lose weight. In some embodiments, a provided compound could be used in combination with other compounds, drugs, or therapeutics, such as metformin and insulin, to treat diabetes and/or obesity.

In some embodiments, a provided compound is useful in treating a blood disorder, e.g., a hemoglobinopathy, such as sickle cell disease or β-thalassemia. For example, while not being bound to any particular mechanism, PRMT5 is a known repressor of y-globin gene expression, and increased fetal y-globin (HbF) levels in adulthood are associated with symptomatic amelioration in sickle cell disease and β-thalassemia. See, e.g., Xu et al., Haematologica. (2012) 97:1632-1640; Rank et al. Blood. (2010) 116:1585-1592. Thus in some embodiments, the inhibition of PRMT5 by a provided compound is useful in treating a blood disorder, such as a hemoglobinopathy such as sickle cell disease or β-thalassemia.

In some embodiments, a provided compound is useful to delay the onset of, slow the progression of, or ameliorate the symptoms of, sickle cell disease. In some embodiments, a provided compound is useful to delay the onset of, slow the progression of, or ameliorate the symptoms of, β-thalassemia. In some embodiments, a provided compound could be used in combination with other compounds, drugs, or therapeutics, to treat a hemoglobinopathy such as sickle cell disease or β-thalassemia.

In some embodiments, a provided compound is useful in treating inflammatory and autoimmune disease. PRMT5 is reported to activate NFkB signaling pathway through the methylation of p65. PRMT5 is reported to interact with Death receptor 4 and Death receptor 5 contributing to TRAIL-induced activation of inhibitor or kB kinase (IKK) and nuclear factor-kB (NF-kB). See, e.g., Tanaka et al., Mol. Cancer. Res. (2009) 7:557-569.; Wei et al., Proc. Nat'l. Acad. Sci. USA (2013) 110:13516-21.

The term “inflammatory disease” refers to those diseases, disorders or conditions that are characterized by signs of pain (dolor, from the generation of noxious substances and the stimulation of nerves), heat (calor, from vasodilatation), redness (rubor, from vasodilatation and increased blood flow), swelling (tumor, from excessive inflow or restricted outflow of fluid), and/or loss of function (functio laesa, which can be partial or complete, temporary or permanent. Inflammation takes on many forms and includes, but is not limited to, acute, adhesive, atrophic, catarrhal, chronic, cirrhotic, diffuse, disseminated, exudative, fibrinous, fibrosing, focal, granulomatous, hyperplastic, hypertrophic, interstitial, metastatic, necrotic, obliterative, parenchymatous, plastic, productive, proliferous, pseudomembranous, purulent, sclerosing,

seroplastic, serous, simple, specific, subacute, suppurative, toxic, traumatic, and/or ulcerative inflammation.

Exemplary inflammatory diseases include, but are not limited to, inflammation associated with acne, anemia (e.g., aplastic anemia, haemolytic autoimmune anaemia), asthma, arteritis (e.g., polyarteritis, temporal arteritis, periarteritis nodosa, Takayasu's arteritis), arthritis (e.g., crystalline arthritis, osteoarthritis, psoriatic arthritis, gouty arthritis, reactive arthritis, rheumatoid arthritis and Reiter's arthritis), ankylosing spondylitis, amylosis, amyotrophic lateral sclerosis, autoimmune diseases, allergies or allergic reactions, atherosclerosis, bronchitis, bursitis, chronic prostatitis, conjunctivitis, Chagas disease, chronic obstructive pulmonary disease, cermatomyositis, diverticulitis, diabetes (e.g., type I diabetes mellitus, type 2 diabetes mellitus), a skin condition (e.g., psoriasis, eczema, burns, dermatitis, pruritus (itch)), endometriosis, Guillain-Barre syndrome, infection, ischaemic heart disease, Kawasaki disease, glomerulonephritis, gingivitis, hypersensitivity, headaches (e.g., migraine headaches, tension headaches), ileus (e.g., postoperative ileus and ileus during sepsis), idiopathic thrombocytopenic purpura, interstitial cystitis (painful bladder syndrome), gastrointestinal disorder (e.g., selected from peptic ulcers, regional enteritis, diverticulitis, gastrointestinal bleeding, eosinophilic gastrointestinal disorders (e.g., eosinophilic esophagitis, eosinophilic gastritis, eosinophilic gastroenteritis, eosinophilic colitis), gastritis, diarrhea, gastroesophageal reflux disease (GORD, or its synonym GERD), inflammatory bowel disease (IBD) (e.g., Crohn's disease, ulcerative colitis, collagenous colitis, lymphocytic colitis, ischaemic colitis, diversion colitis, Behcet's syndrome, indeterminate colitis) and inflammatory bowel syndrome (IBS)), lupus, multiple sclerosis, morphea, myeasthenia gravis, myocardial ischemia, nephrotic syndrome, pemphigus vulgaris, pernicious aneaemia, peptic ulcers, polymyositis, primary biliary cirrhosis, neuroinflammation associated with brain disorders (e.g., Parkinson's disease, Huntington's disease, and Alzheimer's disease), prostatitis, chronic inflammation associated with cranial radiation injury, pelvic inflammatory disease, reperfusion injury, regional enteritis, rheumatic fever, systemic lupus erythematosus, schleroderma, scierodoma, sarcoidosis, spondyloarthopathies, Sjogren's syndrome, thyroiditis, transplantation rejection, tendonitis, trauma or injury (e.g., frostbite, chemical irritants, toxins, scarring, burns, physical injury), vasculitis, vitiligo and Wegener's granulomatosis.

In certain embodiments, the inflammatory disease is an acute inflammatory disease (e.g., for example, inflammation resulting from infection). In certain embodiments, the inflammatory disease is a chronic inflammatory disease (e.g., conditions resulting from asthma, arthritis and inflammatory bowel disease). The compounds may also be useful in treating inflammation associated with trauma and non-inflammatory myalgia. The compounds may also be useful in treating inflammation associated with cancer.

Exemplary autoimmune diseases, include, but are not limited to, arthritis (including rheumatoid arthritis, spondyloarthopathies, gouty arthritis, degenerative joint diseases such as osteoarthritis, systemic lupus erythematosus, Sjogren's syndrome, ankylosing spondylitis, undifferentiated spondylitis, Behcet's disease, haemolytic autoimmune anaemias, multiple sclerosis, amyotrophic lateral sclerosis, amylosis, acute painful shoulder, psoriatic, and juvenile arthritis), asthma, atherosclerosis, osteoporosis, bronchitis, tendonitis, bursitis, skin condition (e.g., psoriasis, eczema, burns, dermatitis, pruritus (itch)), enuresis, eosinophilic disease, gastrointestinal disorder (e.g., selected from peptic ulcers, regional enteritis, diverticulitis, gastrointestinal bleeding, eosinophilic gastrointestinal disorders (e.g., eosinophilic esophagitis, eosinophilic gastritis, eosinophilic gastroenteritis, eosinophilic colitis), gastritis, diarrhea, gastroesophageal reflux disease (GORD, or its synonym GERD), inflammatory bowel disease (IBD) (e.g., Crohn's disease, ulcerative colitis, collagenous colitis, lymphocytic colitis, ischaemic colitis, diversion colitis, Behcet's syndrome, indeterminate colitis) and inflammatory bowel syndrome (IBS)), and disorders ameliorated by a gastroprokinetic agent (e.g., ileus, postoperative ileus and ileus during sepsis; gastroesophageal reflux disease (GORD, or its synonym GERD); eosinophilic esophagitis, gastroparesis such as diabetic gastroparesis; food intolerances and food allergies and other functional bowel disorders, such as non-ulcerative dyspepsia (NUD) and non-cardiac chest pain (NCCP, including costo-chondritis)).

In some embodiments, a provided compound is useful in somatic cell reprogramming, such as reprogramming somatic cells into stem cells. See, e.g., Nagamatsu et al., J Biol Chem. (2011) 286:10641-10648. In some embodiments, a provided compound is useful in germ cell development, and are thus envisioned useful in the areas of reproductive technology and regenerative medicine. See, e.g., Ancelin et al., Nat. Cell. Biol. (2006) 8:623-630.

In some embodiments, compounds described herein can prepared using methods shown in Scheme 1. Compound B can be prepared via ring opening of a chiral or racemic epoxide group. This amino alcohol intermediate can be coupled to form an amide via normal amide coupling methodology using a carboxylic acid A wherein Z is hydrogen or via amination of an ester of intermediate A when Z is an optionally substituted aliphatic group. Further substitution of the tetrahydroisoquinoline ring and/or the Ar ring can be carried out before or after the coupling reaction.

Analogous reactions may be performed to form a carbamate or urea bond using methods known to one of ordinary skill in the art.

In some embodiments, such couplings can be used to provide a key intermediate for further synthesis, as shown, for example, in Scheme 2.

In other embodiments, an amide coupling step is the final synthetic step as shown in Scheme 3.

In some embodiments of the compounds described herein, R¹² or R¹³ is an amine. A non-limiting example of the synthetic sequence used to prepare such analogs is provided herein (see, e.g., Scheme 4). In this example, an alcohol of Formula (Z-1) is oxidized under suitable conditions S1 to affect transformation into an intermediate ketone of Formula (Z-2). A ketone of Formula (Z-2) can be contacted with a primary or secondary amine under suitable conditions S2 to affect a reductive amination which would afford an amino compound of Formula (Z-3).

In some embodiments, the oxidation reaction S1 is carried out using a stoichiometeric oxidant. In some embodiments, the stoichiometric oxidant is pyridinium chlorochromate. In some embodiments, the stoichiometric oxidant is pyridinium dichromate. In some embodiments, the stoichiometric oxidant is Dess-Martin periodinane. In some embodiments, the stoichiometric oxidant is prepared in situ. In some embodiments, the stoichiometric oxidant is prepared in situ using sulfur trioxide pyridine complex and dimethylsulfoxide. In some embodiments, the stoichiometric oxidant is prepared in situ using oxallyl chloride and dimethylsulfoxide. In some embodiments, the stoichiometric oxidant is prepared in situ using a carbodiimide and dimethylsulfoxide. In some embodiments, the stoichiometric oxidant is prepared in situ using N-chlorosuccinimide and dimethylsulfide. In some embodiments, the oxidation reaction S1 is catalyzed. In some embodiments, the catalyst is (2,2,6,6-tetramethyl-piperidin-1-yl)oxyl. In some embodiments, the catalyst is a ruthenium complex. In some embodiments, the catalyst is a palladium complex. In some embodiments, the catalyst is a copper complex. For examples of standard methods and conditions for alcohol oxidation, see Epstein et al., Chem. Rev. (1967) 67(3):247-260 and B. M. Trost ed. “Comprehensive Organic Synthesis”, (1991), Vol. 7, p 281-305.

In some embodiments, both the oxidation step S1 and reductive amination step S2 occur in one pot. In some embodiments, both the oxidation step S1 and the reductive amination step S2 are carried out using the same catalyst. In some embodiments, the catalyst is a rhodium complex. In some embodiments, the catalyst is a ruthenium complex. In some embodiments, the catalyst is an iridium complex.

In some embodiments, the reductive amination reaction S2 is carried out using a borohydride. In some embodiments, the reductive amination reaction S2 is carried out using sodium borohydride. In some embodiments, the reductive amination reaction S2 is carried out using sodium cyanoborohydride. In some embodiments, the reductive amination reaction S2 is carried out using sodium triacetoxyborohydride. In some embodiments, the reductive amination reaction S2 is carried out using a borane. In some embodiments, the reductive amination reaction S2 is carried out using a silyl hydride. In some embodiments, the reductive amination reaction S2 is carried out using hydrogen. In some embodiments, the reductive amination reaction S2 is carried out in two steps, by first contacting a ketone of (Z-2) with an amine to form an intermediate imine, and then reducing the intermediate imine under sufficient conditions to afford a compound of Formula (Z-3). In some embodiments, the reaction conditions S2 comprise addition of a protic acid. In some embodiments, the reaction conditions S2 comprise addition of an aprotic acid. In some embodiments, the reaction conditions S2 comprise in situ formation of the reducing agent. In some embodiments, the reaction conditions S2 comprise a catalyst. In some embodiments, the reaction conditions S2 comprise a transition metal catalyst. In some embodiments, the reaction conditions S2 comprise a palladium or nickel catalyst. In some embodiments, the reductive amination reaction S2 is stereoselective. In some embodiments, the stereoselective reductive amination reaction S2 is carried out in the presence of a chiral catalyst. For examples of standard methods and conditions for reductive aminations, see Gomez et al., Adv. Synth. Catal. (2002) 344(10):1037-1057 and Abdel-Magid et al., J. Org. Chem. (1996), 61:3849.

An alterantive non-limiting synthetic sequence leading to the aforementioned amine analogs is described herein (see Scheme 5). The hydroxyl moiety of a compound of Formula (Z-4) can be transformed into a leaving group under sufficient conditions S3 to afford a compound of Formula (Z-5). The leaving group of a compound of Formula (Z-5) can be displaced with an amine under suitable conditions S4 to produce an amino compound of Formula (Z-6).

In some embodiments, LG of Formula (Z-5) is a halide. In some embodiments, LG of Formula (Z-5) is bromine. In some embodiments, LG of Formula (Z-5) is iodine. In some embodiments, LG of Formula (Z-5) is a substituted or unsubstituted alkyl sulfonate. In some embodiments, LG of Formula (Z-5) is a substituted or unsubstituted aryl sulfonate. In some embodiments, LG of Formula (Z-5) is methyl sulfonate. In some embodiments, LG of Formula (A-5) is trifluoromethane sulfonate. In some embodiments, LG of Formula (Z-5) is a toluene sulfonate. In some embodiments, LG of Formula (Z-5) is a nitrobenzene sulfonate. In some embodiments, when LG of Formula (Z-5) is halide, conditions S3 comprise a phosphoryl halide. In some embodiments, when LG of Formula (Z-5) is halide, conditions S3 comprise a sulfuryl halide. In some embodiments, when LG of Formula (Z-5) is sulfonate, conditions S3 comprise a sulfonyl halide. In some embodiments, when LG of Formula (Z-5) is sulfonate, conditions S3 comprise a sulfonyl anhydride. For examples of standard methods and conditions for organohalide or sulfonate ester synthesis, see Lautens et al., Synthesis (2011) 2:342-346 or Marcotullio et al., Synthesis (2006) 16:2760-2766.

In some embodiments, conditions S4 are neutral. In some embodiments, conditions S4 comprise addition of a base. In certain embodiments of conditions S4, the base is either inorganic or organic. In certain embodiments of conditions S4, the base is inorganic. In certain embodiments of conditions S4, the base is organic. In certain embodiments of conditions S4, the base is a metal acetate, alkoxide, amide, amidine, carbonate, hydroxide, phenoxide, or phosphate. In certain embodiments of conditions S4, the base is sodium, potassium, or caesium carbonate. In certain embodiments of conditions S4, the base is sodium, potassium, or caesium bicarbonate. In certain embodiments of conditions S4, the base is 1,1,3,3-tetramethylguanidine, 1,4-diazabicyclo[2.2.2]octane, 1,8-bis(dimethylamino)naphthalene, 1,8-diazabicycloundec-7-ene, ammonia, diisopropylamine, imidazole, N,N-diisopropylethylamine, piperidine, pyridine, pyrrolidine, or triethylamine. In some embodiments of conditions S4, the solvent is a polar protic solvent. In some embodiments of conditions S4, the solvent is a polar aprotic solvent. In some embodiments of conditions S4, the reaction is performed in the absence of solvent. In some embodiments, conditions S4 comprise a catalyst. In some embodiments of conditions S4, the catalyst is an iodide salt. In some embodiments, both step S3 and the displacement step S4 occur in one pot. In some embodiments, the hydroxyl moiety of a compound of Formula (Z-4) is converted into a leaving group in situ. In some embodiments, the hydroxyl moiety of a compound of Formula (Z-4) is converted into a leaving group in situ using an azodicarboxylate and an aryl or alkyl phosphine. For examples of standard methods and conditions for amine syntheses through alkylation reactions, see Salvatore et. al, Tetrahedron (2001) 57:7785-7811.

An exemplary synthetic route leading to the aforementioned amine analogs is described herein (see Scheme 6). Under conditions S5, Z-5 reacts with a functional group (FG) derivative which can be subsequently converted into a primary amine. Examples of such reactions include, but are not limited to, formation of an azide (e.g. via sodium azide, TMS azide etc) or phthalimide or similarly protected amine derivatives. Under conditions S6, the product from S5 can be further reduced to amine (e.g. by catalytic hydrogenation or under Staudinger condition in the presence of PPh₃ (azide) or hydrazine (Phthalimide)). The target amine analog can be obtained via reductive amination using S2 conditions similar to those described in Scheme 4. Additional modification of the Ar moiety can be carried out by, for example, aromatic substitutions.

A further exemplary synthetic route leading to the aforementioned amine analogs is shown in Scheme 7.

A further exemplary synthetic route leading to the aforementioned amine analogs is described in Scheme 9. The tetrahydroisoquinoline or dihydroisoquinoline moiety is coupled with a protected alkylene chain by amination or reductive amination under S8 conditions. Deproection of the resulting product followed by the standard amide coupling reaction (e.g. as shown in Scheme 1) provides the target amine analog. Additional modifications can be carried out on the Ar moiety by reactions such as aromatic substitutions.

A further exemplary synthetic route leading to the aforementioned amine analogs is described in Scheme 9.

A further exemplary synthetic route leading to the aforementioned amine analogs is described in Scheme 10.

A further exemplary synthetic route leading to the aforementioned amine analogs is described in Scheme 11.

A further exemplary synthetic route leading to the aforementioned amine analogs is described in Scheme 12. A tetrahydroisoquinoline or dihydroisoquinoline moiety is suitably protected on the L terminal under S7 conditions and further alkylated under S11 conditions (e.g. standard alkylation or Mitsunobu conditions) to provide a target amine analog.

A further exemplary synthetic route leading to the aforementioned amine analogs is described in Scheme 13.

A further exemplary synthetic route leading to the aforementioned amine analogs is described in Scheme 14.

EXAMPLES

In order that the invention described herein may be more fully understood, the following examples are set forth. It should be understood that these examples are for illustrative purposes only and are not to be construed as limiting this invention in any manner.

Synthetic Methods Compound 1 N-(3-(3,4-dihydroisoquinolin-2(1H)-yl)-2-hydroxypropyl)-3-(pyridin-2-yl)benzamide

Step 1: methyl 3-(pyridin-2-yl)benzoate

A mixture of (3-(methoxycarbonyl)phenyl)boronic acid (500 mg, 2.78 mmol), 2-bromopyridine (399 mg, 2.53 mmol), K₂CO₃ (1.0 g, 7.6 mmol) and Pd(dppf)Cl₂ (20 mg) in a mixture solution of dioxane (10 mL) and H₂O (2.5 mL) was stirred at 120° C. for 30 min under microwave heating. The catalyst was removed by filtration and the filtrate was concentrated. The residue was purified by column chromatography to give the desired product (530 mg, Yield: 90%) and this was used directly in the next step. LCMS (m/z): 214.1.

Step 2: 3-(pyridin-2-yl)benzoic acid

To a solution of methyl 3-(pyridin-2-yl)benzoate (300 mg, 1.40 mmol) in MeOH (3 mL) was added aqueous NaOH (1 mL, 0.4M). The mixture was stirred at room temperature for 3 h. The reaction solution was concentrated and the residue dissolved in water and adjust pH to 5-6 with 2N of HCl. The solution was extracted with EtOAc (3×20 mL) and the combined organic layers concentrated to give the desired crude product (450 mg, Yield 90%) which was used in the next step without further purification. LCMS (m/z): 200.1 (M+1).

Step 3: N-(3-(3,4-dihydroisoquinolin-2(1H)-yl)-2-hydroxypropyl)-3-(pyridin-2-yl)benzamide

To a solution of 3-(pyridin-2-yl)benzoic acid (200 mg, 1.00 mmol) in DCM (6 mL) was added EDCI (383 mg, 2.00 mmol), HOBt (270 mg, 2 mmol), Et₃N (303 mg, 3 mmol) and 1-amino-3-(3,4-dihydroisoquinolin-2(1H)-yl)propan-2-ol (206 mg, 1.00 mmol). The mixture was stirred at room temperature for 16 h. The reaction mixture was diluted with water (10 mL) and extracted with DCM (3×10 mL). The combined organic layers were then dried and concentrated. The residue was purified by Prep-HPLC to give the product as the formate salt (70 mg, Yield 18%). ¹H NMR (400 MHz, MeOD): 8.64 (d, J=4.8 Hz, 1H), 8.46 (s, 1H), 8.13 (d, J=8.4 Hz, 1H), 7.93-7.90 (m. 3H), 7.60 (dd, J=8.0 Hz, 1H), 7.40-7.37 (m, 1H), 7.26-7.14 (m, 4H), 4.44 (s, 2H), 4.38 (br.s, 1H), 3.57-3.56 (m, 4H), 3.36-3.16 (m, 4H). LCMS (m/z): 388.2 (M+1).

Compound 2 N-(3-(3,4-dihydroisoquinolin-2(1H)-yl)-2-hydroxypropyl)-3-(1-methyl-1H-pyrazol-5-yl)benzamide

Step 1: methyl 3-(1-methyl-1H-pyrazol-5-yl)benzoate

A mixture of (3-(methoxycarbonyl)phenyl)boronic acid (270 mg, 1.5 mmol), 5-bromo-1-methyl-1H-pyrazole (200 mg, 1.25 mmol), K₂CO₃ (518 mg, 3.75 mmol) and Pd(dppf)Cl₂ (10 mg) in a mixture solution of dioxane (8 mL) and H₂O (2 mL) was stirred at 120° C. for 30 min under microwave heating. The catalyst was filtered and the filtrate concentrated. The residue was then purified by column chromatography to give provide the desired product as a colorless oil (226 mg, Yield 60%). It was used directly in the next step. LCMS (m/z): 217.1.

Step 2: 3-(1-methyl-1H-pyrazol-5-yl)benzoic acid

To a solution of methyl 3-(1-methyl-1H-pyrazol-5-yl)benzoate (200 mg, 0.93 mmol) in MeOH (3 mL) was added aqueous NaOH (1 mL, 0.4M). The mixture was stirred at room temperature for 2 h. The reaction solution was concentrated and the residue was dissolved in water and adjusted pH to 5-6 with 2N of HCl. The solution was extracted with EtOAc (2×20 mL). The combined organic layers were dried and concentrated to give the target crude product which was used directly in the next step. LCMS (m/z): 203.1 (M+1).

Step 3: N-(3-(3,4-dihydroisoquinolin-2(1H)-yl)-2-hydroxypropyl)-3-(1-methyl-1H-pyrazol-5-yl)benzamide

To a solution of 3-(1-methyl-1H-pyrazol-5-yl)benzoic acid (130 mg, 0.64 mmol) in DCM (6 mL) was added EDCI (245 mg, 1.28 mmol), HOBt (173 mg, 1.28 mmol), Et₃N (195 mg, 1.93 mmol) and 1-amino-3-(3,4-dihydroisoquinolin-2(1H)-yl)propan-2-ol (132 mg, 0.64 mmol). The mixture was stirred at room temperature for 16 h until completion of the reaction was indicated by which TLC. The reaction solution was then diluted with water (10 mL) and extracted with DCM (2×10 mL) then the combined organic layers were concentrated. The residue was purified by prep-HPLC to give the desired product (60 mg, Yield 25%). ¹H NMR (400 MHz, MeOD): 7.55 (s, 1H), 7.52 (s, 1H), 7.24-7.15 (m, 3H), 6.85-6.73 (m, 4H), 6.03 (s, 1H), 4.22 (br.s, 1H), 4.03-3.99 (m, 1H), 3.45 (s, 3H), 3.17-2.73 (m, 7H). LCMS (m/z): 391.2 (M+1).

Compound 3 (S)—N-(3-(3,4-dihydroisoquinolin-2(1H)-yl)-2-hydroxypropyl)benzamide

Step 1: (R)—2-(oxiran-2-ylmethyl)-1,2,3,4-tetrahydroisoquinoline

To a solution of 1,2,3,4-tetrahydroisoquinoline (1 g, 7.52 mmol) in MeOH (40 mL) was added K₂CO₃ (5.19 g, 37.6 mmol) under 0° C. After stirring for 30 minutes, (R)—2-(chloromethyl) oxirane (0.692 g, 7.52 mmol) was added the reaction. The mixture was then stirred at 0° C. overnight before filtration and washing of the solid by with MeOH. The solution was concentrated and the residue purified by column separation to give the title compound as a colorless oil (70% purity). This crude was used directly in the next step. LCMS (m/z): 190.1 (M+1).

Step 2: (S)-1-amino-3-(3,4-dihydroisoquinolin-2(1H)-yl)propan-2-ol

To a solution of (R)—2-(oxiran-2-ylmethyl)-1,2,3,4-tetrahydroisoquinoline (200 mg, 5.2 mmol) in EtOH (20 mL) was added NH₄OH (600 mg, 35.2 mmol) at −78° C. The reaction mixture was then warmed and heated at 100° C. for 3 h in a seal tube. The reaction mixture was concentrated and the crude product was used in next step without further purification. LCMS (m/z): 207.1 (M+1).

Step 3: (S)—N-(3-(3,4-dihydroisoquinolin-2(1H)-yl)-2-hydroxypropyl)benzamide

A solution of (S)-1-amino-3-(3,4-dihydroisoquinolin-2(1H)-yl)propan-2-ol (200 mg, 0.97 mmol), benzoic acid (122.5 mg, 1.07 mmol), HATU (387.6 mg, 1.02 mmol) and TEA (196.1 mg, 1.94 mmol) in DCM (20 mL) was stirred at room temperature for 2 h until completion of the reaction. The reaction mixture was then diluted with water and extracted with DCM (20 ml×2). The combined organic layers were dried and concentrated with the residue purified by pre-HPLC and SFC separation to give the desired compound (55 mg, Yield 18%). ¹H NMR (400 MHz, MeOD): 7.66 (d, J=8.0 Hz, 2H), 7.36-7.34 (m, 1H), 7.26 (d, J=7.6 Hz, 2H), 6.99-6.89 (m, 4H), 4.01-3.96 (m, 1H), 3.61 (s, 2H), 3.43-3.37 (m, 2H), 2.77-2.72 (m, 4H), 2.56-2.53 (m, 2H). LCMS (m/z): 311.1 (M+1).

Compound 8 N-(3-(3,4-dihydroisoquinolin-2(1H)-yl)-2-hydroxypropyl)-3-(pyridin-3-yl)benzamide

Step 1: methyl 3-(pyridin-3-yl)benzoate

A mixture of (3-(methoxycarbonyl)phenyl)boronic acid (600 mg, 3.33 mmol), 3-bromopyridine (479 mg, 3.0 mmol), K₂CO₃ (1.2 g, 9.0 mmol) and Pd(dppf)Cl₂ (50 mg) in a solution of dioxane (10 mL) and H₂O (2.5 mL) was stirred at 120° C. for 30 minutes with microwave heating under N₂. The catalyst was then filtered and the filtrate concentrated. The residue was then purified by column chromatography to give the desired product and used directly in the next step. (630 mg Yield 90%).

Step 2: 3-(pyridin-3-yl)benzoic acid

To a solution of methyl 3-(pyridin-3-yl)benzoate (450 mg, 2.1 mmol) in MeOH (5 mL) was added aqueous of NaOH (1.5 mL, 0.4M). The mixture was stirred at room temperature for 2 h then reaction solution was concentrated and the resulting residue dissolved in water and adjusted pH to 5-6 with 2N HCl. Extracted was then performed using EtOAc with the organic layer dired and concentrated to give the target product which was used without further purification (600 mg, Yield 90%). LCMS (m/z): 200.1 (M+1).

Step 3: N-(3-(3,4-dihydroisoquinolin-2(1H)-yl)-2-hydroxypropyl)-3-(pyridin-3-yl)benzamide

To a solution of 3-(pyridin-3-yl)benzoic acid (150 mg, 0.75 mmol) in DCM (6 mL) was added EDCI (215 mg, 1.10 mmol), HOBt (148 mg, 1.10 mmol), Et₃N (228 mg, 2.25 mmol) and 1-amino-3-(3,4-dihydroisoquinolin-2(1H)-yl)propan-2-ol (185 mg, 0.90 mmol). The mixture was stirred at room temperature for 16 h. The reaction solution was then washed with water and extracted with DCM. The organic layer was concentrated, dried and the residue purified by prep-HPLC to give the desired title product (110 mg, Yield 34%). ¹H NMR (400 MHz, MeOD) δ 8.80 (d, J=2.0 Hz, 1H), 8.52 (dd, J₁=4.8 Hz, J₂=3.6 Hz, 1H), 8.10 (s, 1H), 8.09 (dd, J₁=8.8 Hz, J₂=1.6 Hz, 1H), 7.83 (d, J=7.6 Hz, 1H), 7.77 (d, J=7.6 Hz, 1H), 7.51-7.46 (m, 2H), 7.06-6.95 (m, 4H), 4.15-4.10 (m, 1H), 3.69 (s, 2H), 3.60-3.47 (m, 2H), 2.85-2.79 (m, 4H), 2.69-2.59 (m, 2H). LCMS (m/z): 388.2 (M+1).

Compound 9 N-(3-(3,4-dihydroisoquinolin-2(1H)-yl)-2-hydroxypropyl)-3-(pyridin-4-yl)benzamide

Step 1: methyl 3-(pyridin-4-yl)benzoate

A mixture of (3-(methoxycarbonyl)phenyl)boronic acid (600 mg, 3.33 mmol), 4-bromopyridine (583.5 mg, 3.0 mmol), K₂CO₃ (1.2 g, 9.0 mmol) and Pd(dppf)Cl₂ (50 mg) in a solution of dioxane (10 mL) and H₂O (2.5 mL) was stirred at 120° C. for 30 min with microwave heating. The catalyst was filtered and the filtrate concentrated. The residue was then purified by column chromatography to give the title product (630 mg Yield 90%).

Step 2: 3-(pyridin-4-yl)benzoic acid

To a solution of methyl 3-(pyridin-4-yl)benzoate (450 mg, 2.1 mmol) in MeOH (5 mL) was added an aqueous solution of NaOH (1.5 mL, 0.4M). The mixture was stirred at room temperature for 2 h. The reaction solution was then concentrated, the residue was next dissolved in water and adjusted pH to 5-6 with the 2N HCl. After extraction with EtOAc, the organic layers were dried and concentrated to give the product desired (600 mg, Yield 90%). LCMS (m/z): 200.1 (M+1).

Step 3: N-(3-(3,4-dihydroisoquinolin-2(1H)-yl)-2-hydroxypropyl)-3-(pyridin-4-yl)benzamide

To a solution of 3-(pyridin-4-yl)benzoic acid (300 mg, 1.5 mmol) in DCM (6 mL) was added EDCI (430 mg, 2.20 mmol), HOBt (296 mg, 2.20 mmol), Et₃N (556 mg, 4.50 mmol) and 1-amino-3-(3,4-dihydroisoquinolin-2(1H)-yl)propan-2-ol (370 mg, 1.80 mmol). The mixture was stirred at room temperature for 16 h, then the reaction mixture was washed with water and extracted with DCM. The organic layer was then dried, concentrated and the residue purified by prep-HPLC to give the title product (230 mg, Yield 40%). ¹H NMR (400 MHz, MeOD) δ 8.54 (d, J=4.0 Hz, 2H), 8.16 (s, 1H), 7.85-7.80 (m, 2H), 7.64 (dd J=4.0 Hz, 2H), 7.48 (dd, J=7.6 Hz, 1H), 7.03-6.95 (m, 4H), 4.13 (br.s, 1H), 3.66 (s, 2H), 3.60-3.48 (m, 2H), 2.80-2.77 (m, 4H), 2.63-2.59 (m, 2H). LCMS (m/z): 388.2 (M+1).

Compound 11 (R)-phenyl (3-(3,4-dihydroisoquinolin-2(1H)-yl)-2-hydroxypropyl)carbamate

Step 1: (S)-2-(oxiran-2-ylmethyl)-1,2,3,4-tetrahydroisoquinoline

To a solution of 1,2,3,4-tetrahydroisoquinoline (5 g, 7.52 mmol) in THF (100 mL) was added KF (8.57 g, 150.4 mmol) at 0° C. (R)-oxiran-2-ylmethyl 3-nitrobenzenesulfonate (10.7 g, 41.4 mmol) was added to the reaction in 1 h. The solution was stirred at room temperature overnight. The solid was removed by filtration and washed with THF. The solution was then concentrated and the residue used for next step without further purification (11.3 g Yield 80%). LCMS (m/z): 190.1 (M+1).

Step 2: (R)—1-amino-3-(3,4-dihydroisoquinolin-2(1H)-yl)propan-2-ol

To a solution of (S)-2-(oxiran-2-ylmethyl)-1,2,3,4-tetrahydroisoquinoline (2.2 g, 0.012 mol) in EtOH (30 mL), NH₃ was bubbled to the solution under −78° C. The reaction mixture was then sealed and heated at 80° C. for 3 h. After LCMS indicated completion of the reaction, the mixture was concentrated and the crude product was used in next step without further purification (2.2 g, Yield 90%). LCMS (m/z): 207.1 (M+1).

Step 3: (R)-phenyl (3-(3,4-dihydroisoquinolin-2(1H)-yl)-2-hydroxypropyl)carbamate

To the stirring solution of (R)-1-amino-3-(3,4-dihydroisoquinolin-2(1H)-yl)propan-2-ol (200 mg, 0.97 mmol) in 15 mL dry DCM was added TEA (1 mL) and the solution was cooled to 0° C. Phenyl carbonochloridate (151.3 mg, 1.02 mmol) in DCM(10 mL) was then added drop wise to the reaction over 20 minutes and the solution was then stirred at room temperature overnight. The solution was then diluted with water, extracted with DCM, the organic layer was concentrated, purified by pre-HPLC to give the product as formate salt (125 mg, Yield 40%). ¹H NMR (400 MHz, MeOD) δ 7.35 (dd, J=7.6 Hz, 2H), 7.31-7.18 (m, 5H), 7.08 (d, J=7.6 Hz, 2H), 4.33 (s, 2H), 4.22-4.19 (m, 1H), 3.48 (t, J=6.0 Hz, 2H), 3.27-3.10 (m, 6H). LCMS (m/z): 327.2 (M+1).

Compound 12 N-(3-(3,4-dihydroisoquinolin-2(1H)-yl)-2-hydroxypropyl)-2-(pyridin-2-yl)benzamide

Step 1: 2-(pyridin-2-yl)benzoic acid

A mixture of 2-boronobenzoic acid (400 mg, 2.4 mmol), 2-bromopyridine (416 mg, 2.6 mmol), K₂CO₃ (994 mg, 7.2 mmol) and Pd(dppf)Cl₂ (20 mg) in dioxane (8 mL) and H₂O (2 mL) was stirred at 125° C. for 30 min. under microwave heating under N₂. The catalyst was filtered, and the filtrate was acidified with 2N HCl to pH 5-6. The solution was concentrated, and the residue was dissolved in MeOH and filtered. The filtrate was concentrated, and the residue was purified by prep-TLC to give the title compound (205 mg, Yield 42.9%). LCMS (m/z): 200.0 (M+1).

Step 2: N-(3-(3,4-dihydroisoquinolin-2(1H)-yl)-2-hydroxypropyl)-2-(pyridin-2-yl) benzamide

To a solution of 2-(pyridin-2-yl)benzoic acid (150 mg, 0.75 mmol) in DCM (6 mL) was added EDCI (215 mg, 1.1 mmol), HOBt (148 mg, 1.1 mmol), Et3N (228 mg, 2.25 mmol) and 1-amino-3-(3,4-dihydroisoquinolin-2(1H)-yl)propan-2-ol (185 mg, 0.9 mmol). The mixture was stirred at 25° C. for 16 h. The reaction solution was washed with water and extracted with DCM. The organic layer was then concentrated, and the residue was purified by prep-HPLC to give the title compound (80 mg, Yield 27.5%). ¹H NMR (CD₃OD, 400 MHz): δ 8.60-8.53 (m, 1H), 7.89-7.81 (m, 1H), 7.63-7.51 (m, 4H), 7.48-7.43 (m, 1H), 7.39-7.32 (m, 1H), 7.12-7.05 (m, 3H), 7.05-6.98 (m, 1H), 4.05-3.93 (m, 1H), 3.73-3.63 (s, 2H), 3.46-3.37 (m, 1H), 3.31-3.23 (m, 1H), 2.92-2.75 (m, 4H), 2.56 (s, 2H). LCMS (m/z): 388.2 (M+1).

Compound 13 N-(3-(3,4-dihydroisoquinolin-2(1H)-yl)-2-hydroxypropyl)-4-(pyridin-2-yl)benzamide

Step 1: 4-(pyridin-2-yl)benzoic acid

A mixture of 4-boronobenzoic acid (200 mg, 1.2 mmol), 2-bromopyridine (208 mg, 1.3 mmol), K₂CO₃ (497 mg, 3.6 mmol) and Pd(dppf)Cl₂ (10 mg) in dioxane (4 mL) and H₂O (1 mL) was stirred at 125° C. for 30 min with microwave heating under N₂. The catalyst was filtered, and the filtrate was acidified with 2N HCl to pH 5-6. The solution was concentrated, and the residue was dissolved in MeOH and filtered. The filtrate was concentrated, and the residue was purified by prep-TLC to give the title compound (100 mg, Yield 41.8%). LCMS (m/z): 200.1 (M+1).

Step 2: N-(3-(3,4-dihydroisoquinolin-2(1H)-yl)-2-hydroxypropyl)-4-(pyridin-2-yl)benzamide

To a solution of 4-(pyridin-2-yl)benzoic acid (100 mg, 0.5 mmol) in DCM (5 mL) was added EDCI (144 mg, 0.75 mmol), HOBt (101 mg, 0.75 mmol), Et₃N (152 mg, 1.5 mmol) and 1-amino-3-(3,4-dihydroisoquinolin-2(1H)-yl)propan-2-ol (103 mg, 0.5 mmol). The mixture was stirred at 25° C. for 16 h. The reaction solution was washed with water and extracted with DCM. The organic layer was concentrated, and the residue was purified by prep-HPLC to give the title compound (30 mg, Yield 15.5%). ¹H NMR (CD₃OD, 400 MHz): δ 8.70-8.60 (m, 1H), 8.01-7.84 (m, 6H), 7.45-7.36 (m, 1H), 7.16-6.99 (m, 4H), 4.20-4.10 (m, 1H), 3.79 (s, 2H), 3.62-3.46 (m, 2H), 2.92 (s, 4H), 2.78-2.65 (m, 2H). LCMS (m/z): 388.2 (M+1).

Compound 14 N-(3-(3,4-dihydroisoquinolin-2(1H)-yl)-2-hydroxypropyl)-3-morpholinobenzamide

Step 1: 3-bromo-N-(3-(3,4-dihydroisoquinolin-2(1H)-yl)-2-hydroxypropyl) benzamide

To a solution of 3-bromobenzoic acid (200 mg, 1.0 mmol) in DCM (8 mL) was added Et₃N (303 mg, 3.0 mmol), EDCI (383 mg, 2.0 mmol), HOBt (270 mg, 2.0 mmol) and 1-amino-3-(3,4-dihydroisoquinolin-2(1H)-yl)propan-2-ol (247 mg, 1.2 mmol). The mixture was stirred at 25° C. for 6 h. The mixture was treated with water and extracted with EA. The organic layer was washed with NaHCO₃, brine, dried over Na₂SO₄ and concentrated to give the title compound which was used in next step without further purification (300 mg, Yield 77%). LCMS (m/z): 390.1 (M+1).

Step 2: N-(3-(3,4-dihydroisoquinolin-2(1H)-yl)-2-hydroxypropyl)-3-morpholino benzamide

A mixture of 3-bromo-N-(3-(3,4-dihydroisoquinolin-2(1H)-yl)-2-hydroxypropyl) benzamide (200 mg, 0.51 mmol), morpholine (44 mg, 0.51 mmol), Pd₂(dba)₃ (46 mg, 0.05 mmol), BINAP (62 mg, 0.1 mmol) and NaOtBu (73 mg, 0.77 mmol) in toluene (6 mL) was stirred at reflux for 16 h under N₂. The reaction solution was concentrated, and the residue was dissolved in EA and filtered. The filtrate was concentrated, and the residue was purified by prep-HPLC to give the title compound (15 mg, Yield 7.5%). ¹H NMR (CD₃OD, 400 MHz): δ 8.48 (brs, 1H), 7.42 (s, 1H), 7.37-7.28 (m, 2H), 7.27-7.19 (m, 3H), 7.18-7.11 (m, 2H), 4.31-4.23 (m, 1H), 4.19 (s, 2H), 3.86 (dd, J=5.1, 4.8 Hz, 4H), 3.61-3.44 (m, 2H), 3.32-3.29 (m, 2H), 3.25-3.16 (m, 4H), 3.14-2.97 (m, 4H). LCMS (m/z): 396.2 (M+1).

Compound 15 N-(3-(3,4-dihydroisoquinolin-2(1H)-yl)-2-hydroxypropyl)-3-(((tetrahydro-2H-pyran-4-yl)amino)methyl)benzamide

Step 1: methyl 3-(((tetrahydro-2H-pyran-4-yl)amino)methyl)benzoate

To a solution of methyl 3-formylbenzoate (492 mg, 3.0 mmol) in MeOH (10 mL) was added tetrahydro-2H-pyran-4-amine (303 mg, 3.0 mmol) and AcOH (0.05 mL). The mixture was stirred at 25° C. for 2 h. NaBH₃CN (945 mg, 15.0 mmol) was added, and the resulting mixture was stirred at 25° C. for 16 h. The reaction solution was concentrated and the residue was dissolved in water and extracted with DCM. The organic layer was concentrated, and the residue was purified by prep-TLC to give the title product (500 mg, Yield 67%). LCMS (m/z): 250.1 (M+1).

Step 2: methyl 3-(((tert-butoxycarbonyl)(tetrahydro-2H-pyran-4-yl)amino)-methyl)benzoate

To a solution of methyl 3-(((tetrahydro-2H-pyran-4-yl)amino)methyl)benzoate (400 mg, 1.6 mmol) in a mixture solution of THF (10 mL) and H₂O (1 mL) was added Boc₂O (418 mg, 1.9 mmol) and Et₃N (243 mg, 2.4 mmol). The mixture was stirred at 25° C. for 16 h. The reaction solution was concentrated to remove THF, and the residue was dissolved in water and extracted with EA. The organic layer was concentrated, and the residue was purified by column chromatography to give the title product (550 mg, 98%). LCMS (m/z): 350.1 (M+1).

Step 3: 3-(((tert-butoxycarbonyl)(tetrahydro-2H-pyran-4-yl)amino)methyl) benzoic acid

To a solution of methyl 3-(((tert-butoxycarbonyl)(tetrahydro-2H-pyran-4-yl)amino)methyl)benzoate (550 mg, 1.57 mmol) in MeOH (5 mL) was added aqueous of NaOH (2.0 mL, 40% w/w). The mixture was stirred at 25° C. for 4 h. The reaction solution was concentrated, and the residue was dissolved in water and adjusted pH to 5-6 with 2N of HCl and extracted with EA. The organic layer was concentrated to give the desired product (300 mg, Yield 57%). LCMS (m/z): 336.1 (M+1).

Step 4: tert-butyl 3-((3-(3,4-dihydroisoquinolin-2(1H)-yl)-2-hydroxypropyl) carbamoyl)benzyl(tetrahydro-2H-pyran-4-yl)carbamate

To a solution of 3-(((tert-butoxycarbonyl)(tetrahydro-2H-pyran-4-yl)amino)methyl)be nzoic acid (300 mg, 0.89 mmol) in DCM (8 mL) was added EDCI (257 mg, 1.34 mmol), HOBt (181 mg, 1.34 mmol), Et₃N (270 mg, 2.67 mmol) and 1-amino-3-(3,4-dihydroisoquinolin-2(1H)-yl)propan-2-ol (183 mg, 0.89 mmol). The mixture was stirred at 25° C. for 16 h. The reaction solution was washed with water and extracted with DCM. The organic layer was concentrated to give the title product (350 mg, Yield 65%). LCMS (m/z): 524.3 (M+1).

Step 5: N-(3-(3,4-dihydroisoquinolin-2(1H)-yl)-2-hydroxypropyl)-3-(((tetrahydro-2H-pyan-4-yl)amino)methyl)benzamide

To a solution of tert-butyl 3-((3-(3,4-dihydroisoquinolin-2(1H)-yl)-2-hydroxypropyl)carbamoyl)benzyl(tetrahydro-2H-pyran-4-yl)carbamate (450 mg, crude) in DCM (6 mL) was added TFA (6 mL). The mixture was stirred at 25° C. for 16 h. The reaction solution was concentrated, and the residue was purified by prep-HPLC to give the title product (200 mg, 54.9%). ¹H NMR (CD₃OD, 400 MHz): δ 8.08 (s, 1H), 8.00-7.89 (m, 1H), 7.81-7.68 (m, 1H), 7.58 (s, 1H), 7.39-7.15 (m, 4H), 4.75-4.47 (m, 2H), 4.46-4.39 (m, 1H), 4.34 (s, 2H), 4.05 (dd, J=11.6, 3.6 Hz, 2H), 3.98-3.70 (brs, 1H), 3.62-3.55 (m, 2H), 3.55-3.45 (m, 4H), 3.45-3.32 (m, 2H), 3.32-3.06 (m, 2H), 2.22-2.07 (m, 2H), 1.89-1.72 (m, 2H). LCMS (m/z): 424.2 (M+1).

Compound 16 N-(3-(3,4-dihydroisoquinolin-2(1H)-yl)-2-hydroxypropyl)-3-((tetrahydro-2H-pyran-4-yl)amino)benzamide

Step 1: 3-((tert-butoxycarbonyl)amino)benzoic acid

To a solution of 3-aminobenzoic acid (1.37 g, 10 mmol) in a mixture solution of THF (20 mL) and H₂O (2 mL) was added Boc₂O (2.18 g, 10 mmol) and Et₃N (1.52 g, 15 mmol). The mixture was stirred at 25° C. for 16 h. The reaction solution was concentrated and the residue was dissolved in water and extracted with EA. The organic layer was concentrated to give the title product (2.3 g, Yield 97%). LCMS (m/z): 260.0 (M+23).

Step 2: tert-butyl (3-((3-(3,4-dihydroisoquinolin-2(1H)-yl)-2-hydroxypropyl) carbamoyl)phenyl)carbamate

To a solution of 3-((tert-butoxycarbonyl)amino)benzoic acid (2.5 g, 10.5 mmol) in DCM (25 mL) was added EDCI (3.0 g, 15.7 mmol), HOBt (2.1 g, 15.7 mmol), Et₃N (2.1 g, 21 mmol) and 1-amino-3-(3,4-dihydroisoquinolin-2(1H)-yl)propan-2-ol (2.2 g, 10.5 mmol). The mixture was stirred at 25° C. for 16 h. The reaction solution was washed with water, extracted with DCM and the organic layer was concentrated, and the residue was purified by column chromatography to give the desired product (3.2 g, Yield 71%). LCMS (m/z): 426.3 (M+1).

Step 3: 3-amino-N-(3-(3,4-dihydroisoquinolin-2(1H)-yl)-2-hydroxypropyl) benzamide

To a solution of tert-butyl (3-((3-(3,4-dihydroisoquinolin-2(1H)-yl)-2-hydroxypropyl)carbamoyl)phenyl)carbamate (500 mg, 1.18 mmol) in DCM (5 mL) was added TFA (5 mL). The mixture was stirred at 25° C. for 16 h. The reaction solution was concentrated, and the residue was dissolved in water, pH was adjusted to 7-7.5 with saturated aqueous NaHCO₃ and extracted with EA. The organic layer was concentrated to give the title product (360 mg, Yield 94%). The crude product was used in next step without further purification. LCMS (m/z): 326.2 (M+1).

Step 4: N-(3-(3,4-dihydroisoquinolin-2(1H)-yl)-2-hydroxypropyl)-3-((tetrahydro-2H-pyran-4-yl)amino)benzamide

To a solution of 3-amino-N-(3-(3,4-dihydroisoquinolin-2(1H)-yl)-2-hydroxypropyl)benzamide (325 mg, 1.0 mmol) in MeOH (10 mL) was added dihydro-2H-pyran-4(3H)-one (88 mg, 1.0 mmol) and AcOH (0.05 mL). The mixture was stirred at 25° C. for 2 h. NaBH₃CN (630 mg, 10.0 mmol) was added, and the resulting mixture was stirred at 25° C. for 16 h. The reaction solution was concentrated, and the residue was dissolved in water, extracted with EA. The organic layer was concentrated, and the residue was purified by prep-HPLC to give the title compound (200 mg, Yield 48.9%). ¹H NMR (CD₃OD, 400 MHz): δ 8.44 (brs, 1H), 7.32-7.20 (m, 3H), 7.20-7.13 (m, 2H), 7.13-7.09 (m, 1H), 7.08-7.00 (m, 1H), 6.86-6.77 (m, 1H), 4.39 (s, 2H), 4.35-4.25 (m, 1H), 4.03-3.89 (m, 2H), 3.63-3.40 (m, 7H), 3.31-3.07 (m, 4H), 2.06-1.92 (m, 2H), 1.55-1.40 (m, 2H). LCMS (m/z): 410.2 (M+1).

Compound 17 N-(3-(3,4-dihydroisoquinolin-2(1H)-yl)-2-hydroxypropyl)picolinamide

Step 1: N-(3-(3,4-dihydroisoquinolin-2(1H)-yl)-2-hydroxypropyl)picolinamide

To a solution of picolinic acid (100 mg, 0.81 mmol) in DCM (10 mL), was added EDCI (187 mg, 0.97 mmol) and HOBT (132 mg, 0.98 mmol), which was stirred at 25° C. for 0.5 h before 1-amino-3-(3,4-dihydroisoquinolin-2(1H)-yl)propan-2-ol (167 mg, 0.81 mmol) was added and the resulting mixture was stirred at 25° C. for 2 h. The solution was concentrated in vacuo and the residue was purified by prep-HPLC to provide the title compound (68 mg, Yield 26.9%). ¹H NMR (CD₃OD, 400 MHz): δ 8.61 (d, J=3.9 Hz, 1H), 8.49 (brs, 1H), 8.10 (d, J=7.8 Hz, 1H), 8.01-7.92 (m, 1H), 7.56 (dd, J=5.1, 6.8 Hz, 1H), 7.31-7.20 (m, 3H), 7.19-7.13 (m, 1H), 4.44-4.27 (m, 3H), 3.66-3.47 (m, 4H), 3.31-3.12 (m, 4H). LCMS (m/z): 312.1 (M+1).

Compound 21 N-(3-(3,4-dihydroisoquinolin-2(1H)-yl)-2-hydroxypropyl)-4-sulfamoylbenzamide

Step 1: N-(3-(3,4-dihydroisoquinolin-2(1H)-yl)-2-hydroxypropyl)-4-sulfamoylbenzamide

A solution of 4-sulfamoylbenzoic acid (88.4 mg, 0.44 mmol), HATU (182.4 mg, 0.48 mmol) and TEA (48.48 mg, 0.48 mmol) in DCM (10 mL) was stirred at 22° C. for 10 min. 1-amino-3-(3,4-dihydroisoquinolin-2(1H)-yl)propan-2-ol (100 mg, 0.48 mmol) was then added and the solution was stirred at 22° C. for another 3 h. The reaction mixture was diluted with water and extracted with DCM. The organic layers were combined, dried over anhydrous Na₂SO₄, filtered and concentrated. The residue was purified by prep-HPLC to give the title compound (49.5 mg, Yield 29%). ¹H NMR (CD₃OD, 400 MHz): δ 7.92 (s, 4H), 7.16-7.09 (m, 3H), 7.05-7.02 (m, 1H), 4.14-4.12 (m, 1H), 3.77 (s, 2H), 3.58-3.39 (m, 2H), 2.94-2.91 (m, 2H), 2.90-2.86 (m, 2H), 2.75-2.66 (m, 2H). LCMS (m/z): 390.1 (M+1).

Compound 23 4-acetamido-N-(3-(3,4-dihydroisoquinolin-2(1H)-yl)-2-hydroxypropyl)benzamide

Step 1: 4-acetamido-N-(3-(3,4-dihydroisoquinolin-2(1H)-yl)-2-hydroxypropyl)benzamide

A solution of 4-acetamidobenzoic acid (100 mg, 0.56 mmol), HATU (234 mg, 0.62 mmol) and TEA (63 mg, 0.62 mmol) in DCM (10 mL) was stirred at 22° C. for 10 min. 1-amino-3-(3,4-dihydroisoquinolin-2(1H)-yl)propan-2-ol (116 mg, 0.56 mmol) was then added and the solution was stirred at 22° C. for another 3 h. The reaction mixture was then diluted with water and extracted with DCM. The organic layers were combined and dried over anhydrous Na₂SO₄, filtered and concentrated and the residue was purified by prep-HPLC to give the title compound (48.5 mg, Yield 24%). ¹H NMR (CD₃OD, 400 MHz): δ 7.77-7.72 (m, 2H), 7.63-7.57 (m, 2H), 7.17-7.08 (m, 3H), 7.04 (d, J=7.0 Hz, 1H), 4.12 (t, J=6.0 Hz, 1H), 3.75 (s, 2H), 3.58-3.46 (m, 2H), 2.92-2.85 (m, 4H), 2.74-2.63 (m, 2H), 2.16 (s, 3H). LCMS (m/z): 368.1 (M+1).

Compound 28 N-(3-(3,4-dihydroisoquinolin-2(1H)-yl)-2-hydroxypropyl)-3-(2-(dimethylamino)ethoxy)benzamide

Step 1: methyl 3-(2-(dimethylamino)ethoxy)benzoate

To a stirred mixture of methyl 3-hydroxybenzoate (200 mg, 1.32 mmol), and K₂CO₃ (169 mg, 1.58 mmol) in MeCN (50 mL) was added 2-chloro-N,N-dimethylethanamine (137 mg, 1.58 mmol). The mixture was stirred at 60° C. for 16 h. The reaction mixture was filtered and the filtrate was concentrated to give the title compound that was used without further purification (300 mg, Yield 98%). ¹H NMR (CDCl₃, 400 MHz): δ 7.61-7.53 (m, 1H), 7.53-7.47 (m, 1H), 7.26-7.23 (m, 1H), 7.06-7.04 (m, 1H), 4.05 (t, J=5.6 Hz, 2H), 3.84 (s, 3H), 2.69 (t, J=5.6 Hz, 2H), 2.28 (s, 6H). LCMS (m/z): 224.2 (M+1).

Step 2: N-(3-(3,4-dihydroisoquinolin-2(1H)-yl)-2-hydroxypropyl)-3-(2-(dimethylamino)ethoxy)benzamide

A mixture of crude methyl 3-(2-(dimethylamino)ethoxy)benzoate (300 mg, 1.34 mmol) and 1-amino-3-(3,4-dihydroisoquinolin-2(1H)-yl)propan-2-ol (332 mg, 1.61 mmol) in EtOH (2 mL) was heated at 120° C. in a microwave reactor for 3 h. After evaporation of the solvent, the residue was purified by prep-HPLC to give the title compound (34 mg, Yield 6.4%). ¹H NMR (CD₃OD, 400 MHz): δ 7.43-7.42 (m, 1H), 7.34-7.29 (m, 2H), 7.12-7.10 (m, 4H), 7.09-7.03 (m, 1H), 4.20-4.10 (m, 3H), 3.75 (brs, 2H), 3.59-3.42 (m, 2H), 2.95-2.85 (m, 4H), 2.82-2.77 (m, 2H), 2.72-2.65 (m, 2H), 2.37 (s, 6H). LCMS (m/z): 398.1 (M+1).

Compound 30 N-(3-(3,4-dihydroisoquinolin-2(1H)-yl)-2-hydroxypropyl)-3-((4-methylpiperazin-1-yl)methyl)benzamide

Step 1: 3-((4-(tert-butoxycarbonyl)piperazin-1-yl)methyl)benzoic acid

The solution of 3-formylbenzoic acid (300 mg, 1.83 mmol) and tert-butyl piperazine-1-carboxylate (340 mg, 1.83 mmol) in MeOH (10 mL) was stirred at 27° C. for 1 h. Then NaBH₃CN (138 mg, 2.19 mmol) was added to the solution and stirred at 27° C. for 6 h. The solution was concentrated and the residue was purified by column to give the title product (320 mg, Yield 50%). LCMS (m/z): 321.2 (M+1).

Step 2: tert-butyl 4-(3-((3-(3,4-dihydroisoquinolin-2(1H)-yl)-2-hydroxypropyl) carbamoyl)benzyl)piperazine-1-carboxylate

The solution of 3-((4-(tert-butoxycarbonyl)piperazin-1-yl)methyl)benzoic acid (100 mg, 0.31 mmol) and HATU (119 mg, 0.31 mmol) in DCM (10 mL) was stirred at 28° C. for 30 min. Then 1-amino-3-(3,4-dihydroisoquinolin-2(1H)-yl)propan-2-ol (64.4 mg, 0.31 mmol) and DIPEA (48.4 mg, 0.38 mmol) was added and the resulting solution was stirred at 28° C. for 16 h. The solution was concentrated and the residue was purified by column chromatography to give the crude title product (150 mg, Yield 94%). LCMS (m/z): 509.2 (M+1).

Step 3: N-(3-(3,4-dihydroisoquinolin-2(1H)-yl)-2-hydroxypropyl)-3-(piperazin-1-ylmethyl)benzamide

The solution of tert-butyl 4-(3-((3-(3,4-dihydroisoquinolin-2(1H)-yl)-2-hydroxypropyl)carbamoyl)benzyl)piperazine-1-carboxylate (160 mg, 0.314 mmol) in DCM (2 mL) and TFA (2 mL) was stirred at 27° C. for 16 h. The solution was concentrated and the residue was purified by prep-HPLC to give the title product (89 mg, Yield 69.0%). ¹H NMR (D₂O, 400 MHz): δ 7.66-7.56 (m, 2H), 7.51-7.44 (m, 1H), 7.44-7.37 (m, 1H), 7.16-7.06 (m, 3H), 7.02 (d, J=7.3 Hz, 1H), 4.11 (quin, J=5.9 Hz, 1H), 3.73-3.60 (m, 2H), 3.56-3.49 (m, 2H), 3.49-3.42 (m, 1H), 3.41-3.32 (m, 1H), 2.86-2.75 (m, 8H), 2.68-2.58 (m, 2H), 2.56-2.32 (m, 4H). LCMS (m/z): 409.2 (M+1).

Step 4: N-(3-(3,4-dihydroisoquinolin-2(1H)-yl)-2-hydroxypropyl)-3-((4-methyl piperazin-1-yl)methyl)benzamide

The solution of N-(3-(3,4-dihydroisoquinolin-2(1H)-yl)-2-hydroxypropyl)-3-(piperazin-1-ylmethyl)benzamide (78 mg, 0.19 mmol) and HCHO solution (0.5 mL) in MeOH (10 mL) was stirred at 27° C. for 1 h. Then NaBH₃CN (14.5 mg, 0.23 mmol) was added to the solution and stirred at 27° C. for 4 h. The solution was concentrated and the residue was purified by column chromatography to give the title product (14.1 mg, Yield 17.5%). ¹H NMR (CD₃OD, 400 MHz): δ 7.79 (s, 1H), 7.70 (d, J=7.8 Hz, 1H), 7.50 (d, J=7.5 Hz, 1H), 7.39-7.32 (m, 1H), 7.20-7.07 (m, 3H), 7.06-6.98 (m, 1H), 4.13 (quin, J=6.0 Hz, 1H), 3.75 (s, 2H), 3.63-3.44 (m, 4H), 2.95-2.83 (m, 4H), 2.78-2.62 (m, 3H), 2.62-2.30 (m, 7H), 2.28 (s, 3H). LCMS (m/z): 423.2 (M+1).

Compound 34 N-(3-(3,4-dihydroisoquinolin-2(1H)-yl)-2-hydroxypropyl)-3-(1-methylpyrrolidin-2-yl) benzamide

To a solution of N-(3-(3,4-dihydroisoquinolin-2(1H)-yl)-2-hydroxypropyl)-3-(pyrrolidin-2-yl)benzamide (20 mg, 0.13 mmol) in MeOH (20 mL) was added HCHO (1 mL) and AcOH (0.05 mL). The reaction mixture was stirred at room temperature for 30 min at which time NaBH₃CN (200 mg, 3.22 mmol) was added. The reaction mixture was stirred at room temperature for 2 h. The solvent was removed and the crude product was purified by prep-HPLC to give the desired product (8.5 mg, Yield 16.8%). ¹H NMR (CD₃OD, 400 MHz): δ 7.80 (brs, 1H), 7.67 (d, J=7.6 Hz, 1H), 7.52 (d, J=7.6 Hz, 1H), 7.35-7.41 (m, 1H), 7.09-7.15 (m, 3H), 7.09-7.15 (m, 1H), 7.02-7.08 (m, 1H), 4.10-4.16 (m, 1H), 3.73-3.81 (m, 2H), 3.49-3.58 (m, 2H), 3.20-3.28 (m, 1H), 3.08-3.16 (m, 1H), 2.84-2.97 (m, 4H), 2.64-2.75 (m, 2H), 2.33-2.40 (m, 1H), 2.20-2.27 (m, 1H), 2.16 (s, 3H), 1.95-2.05 (m, 1H), 1.77-1.93 (m, 2H). LCMS (m/z): 394.1 (M+1).

Compound 35 N-(3-(3,4-dihydroisoquinolin-2(1H)-yl)-2-hydroxypropyl)-3-(piperazin-1-yl)benzamide

Step 1: 3-(4-(tert-butoxycarbonyl)piperazin-1-yl)benzoic acid

The mixture of ethyl 3-bromobenzoate (500 mg, 2.33 mmol), tert-butyl piperazine-1-carboxylate (433 mg, 2.33 mmol) and NaOtBu (268 mg, 2.78 mmol), Pd₂(dba)₃ (20 mg, 0.034 mmol) and Xantphos (20 mg, 0,034 mmol) in anhydrous dioxane (10 mL) was heated to 110° C. for 10 h. The mixture was concentrated and the residue was partitioned in water, the solution was adjusted to pH=5, and extracted with DCM. The organic layer was washed with water and brine, dried over anhydrous Na₂SO₄, filtered and concentrated to afford the title compound that was used for next step (300 mg, Yield 42.2%). LCMS (m/z): 307.1 (M+1).

Step 2: tert-butyl 4-(3-(3-(3,4-dihydroisoquinolin-2(1H)-yl)-2-hydroxypropyl carbamoyl)phenyl)piperazine-1-carboxylate

The solution of 3-(4-(tert-butoxycarbonyl)piperazin-1-yl)benzoic acid (300 mg, 1.0 mmol) and HATU (381 mg, 1.0 mmol) in DCM (10 mL) was stirred at 25° C. for 30 min. Then 1-amino-3-(3,4-dihydroisoquinolin-2(1H)-yl)propan-2-ol (200 mg, 1.0 mmol) and DIPEA (259 mg, 2.00 mmol) was added and the resulting solution was stirred at 25° C. for 16 h. The solution was concentrated and the residue was purified by column chromatography to give the title product (140 mg, Yield 28.8%). LCMS (m/z): 495.2 (M+1).

Step 3: N-(3-(3,4-dihydroisoquinolin-2(1H)-yl)-2-hydroxypropyl)-3-(piperazin-1-yl)benzamide

To a solution of tert-butyl 4-(3-(3-(3,4-dihydroisoquinolin-2(1H)-yl)-2-hydroxy propylcarbamoyl)phenyl)piperazine-1-carboxylate (140 mg, 0.28 mmol) in DCM (2 mL) was added TFA (2 mL). The resulting solution was stirred at 27° C. for 4 h. The solution was concentrated and the residue was purified by prep-HPLC to give the title product (64.0 mg, Yield 57%). ¹H NMR (CD₃OD, 400 MHz): δ 7.47-7.38 (s, 1H), 7.31-7.21 (m, 2H), 7.19-7.08 (m, 4H), 7.08-7.01 (m, 1H), 4.13 (quin, J=6.0 Hz, 1H), 3.77 (s, 2H), 3.62-3.52 (m, 1H), 3.51-3.43 (m, 1H), 3.31-3.19 (m, 4H), 3.15-3.00 (m, 4H), 2.98-2.83 (m, 4H), 2.75-2.62 (m, 2H). LCMS (m/z): 395.2 (M+1).

Compound 38 N-(3-(3,4-dihydroisoquinolin-2(1H)-yl)-2-hydroxypropyl)-3-(1-methylpyrrolidin-3-yl)benzamide

Step 1: tert-butyl 3-(((trifluoromethyl)sulfonyl)oxy)-2,5-dihydro-1H-pyrrole-1-carboxylate

A solution of tert-butyl 3-oxopyrrolidine-1-carboxylate (5 g, 27.0 mmol) in THF (50 ml) was slowly added to a stirring solution of NaHMDS (1M THF, 32.4 ml, 32.4 mmol) at −78° C. After 10 min a solution of N-phenyl-O—((trifluoromethyl)sulfonyl)-N-(((trifluoromethyl) sulfonyl)oxy)hydroxylamine (10.6 g, 29.7 mmol) in THF (50 ml) was slowly added. Stirring at −78° C. was continued for 30 min and the cooling bath was removed. The reaction mixture was stirred at room temperature for 1.5 h. The mixture was cooled to 0° C., quenched with sat. NaHCO₃, and extracted with MTBE. The organic layer was washed with 5% citric acid, 1M NaOH, H₂O, brine, dried over Na₂SO₄, concentrated and the residue was purified by flash column chromatography to give the title compound (1.5 g, Yield 17.4%). ¹H NMR (CDCl₃, 400 MHz): δ 5.77 (s, 1H), 4.14-4.30 (m, 4H), 1.48 (s, 9H).

Step 2: tert-butyl 3-(3-(methoxycarbonyl)phenyl)-2,5-dihydro-1H-pyrrole-1-carboxylate

To a solution of tert-butyl 3-(((trifluoromethyl)sulfonyl)oxy)-2,5-dihydro-1H-pyrrole-1-carboxylate (300 mg, 0.95 mmol) in dioxane (4 mL) and H₂O (1 mL) was added methyl 3-(4,4,5,5-tetramethyl-1,3,2-dioxaborolan-2-yl)benzoate (298 mg, 1.13 mmol), Pd(dppf)Cl₂ (66 mg, 0.09 mmol) and K₂CO₃ (392 mg, 2.84 mmol) at 27° C. The mixture was stirred at 100° C. for 16 h. The catalyst was filtered, the filtrate was concentrated and the residue was purified by column chromatography to give the title compound (213 mg, Yield 74.2%). ¹H NMR (CDCl₃, 400 MHz): δ 8.03 (d, J=19.6 Hz, 1H), 7.94 (d, J=7.8 Hz, 1H), 7.55 (dd, J=15.7, 7.8 Hz, 1H), 7.38-7.45 (m, 1H), 6.22 (dt, J=16.4, 1.8 Hz, 1H), 4.43-4.58 (m, 2H), 4.24-4.38 (m, 2H), 3.88-3.96 (m, 3H), 1.51 (d, J=7.9 Hz, 9H).

Step 3: tert-butyl 3-(3-(methoxycarbonyl)phenyl)pyrrolidine-1-carboxylate

To a solution of tert-butyl 3-(3-(methoxycarbonyl)phenyl)-2,5-dihydro-1H-pyrrole-1-carboxylate (213 mg, 0.7 mmol) in MeOH (10 mL) was added Pd/C (20 mg). The mixture was stirred for 30 min at 30° C. under H₂ atmosphere. The mixture was filtered and the filtrate was concentrated to give the title compound which was used in next step without further purification (210 mg, Yield 98.1%). ¹H NMR (CDCl₃, 400 MHz): δ 7.88-7.97 (m, 2H), 7.36-7.48 (m, 2H), 3.92 (s, 3H), 3.77-3.90 (m, 1H), 3.53-3.72 (m, 1H), 3.25-3.47 (m, 3H), 2.29 (d, J=5.27 Hz, 1H), 2.01 (quin, J=10.2 Hz, 1H), 1.42-1.55 (m, 10H).

Step 4: 3-(1-(tert-butoxycarbonyl)pyrrolidin-3-yl)benzoic acid

To a solution of tert-butyl 3-(3-(methoxycarbonyl)phenyl)pyrrolidine-1-carboxylate (210 mg, 0.7 mmol) in EtOH (4 ml) was added a solution of NaOH (56 mg, 1.4 mmol) in H₂O (1 ml) at 29° C. The mixture was stirred for 30 min at 29° C. The mixture was concentrated and the residue was treated with water and extracted with EA. The water layer was treated with 2N HCl until pH=3, extracted with EA and the combined organic layers were washed with brine, dried over Na₂SO₄ and concentrated to give the title compound which was used in next step without further purification (200 mg, Yield 98.0%).

Step 5: tert-butyl 3-(3-((3-(3,4-dihydroisoquinolin-2(1H)-yl)-2-hydroxypropyl)carbamoyl) phenyl)pyrrolidine-1-carboxylate

To a solution of 3-(1-(tert-butoxycarbonyl)pyrrolidin-3-yl)benzoic acid (200 mg, 0.69 mmol) in DMF (4 ml) was added TEA (208 mg, 2.06 mmol), HOBt (139 mg, 1.03 mmol), EDCI (197 mg, 1.03 mmol) and 1-amino-3-(3,4-dihydroisoquinolin-2(1H)-yl)propan-2-ol (170 mg, 0.82 mmol) at 33° C. The reaction mixture was stirred for 16 h at 31° C. The mixture was treated with water and extracted with EA. The organic layer was washed with brine, dried over Na₂SO₄ and concentrated to give the title compound which was used in next step without further purification (300 mg, Yield 92%).

Step 6: N-(3-(3,4-dihydroisoquinolin-2(1H)-yl)-2-hydroxypropyl)-3-(pyrrolidin-3-yl) benzamide

To a solution of tert-butyl 3-(3-((3-(3, 4-dihydroisoquinolin-2(1H)-yl)-2-hydroxypropyl) carbamoyl)phenyl)pyrrolidine-1-carboxylate (400 mg, 0.83 mmol) in CH₂Cl₂ (5 mL) was added TFA (1 mL) at 29° C. The mixture was stirred for 2 h at 29° C. The mixture was concentrated and the residue was purified by prep-HPLC to give the title compound (79.1 mg, Yield 25.0%). ¹H NMR (CD₃OD, 400 MHz): δ 7.75-7.93 (m, 2H), 7.45-7.62 (m, 2H), 7.17-7.37 (m, 4H), 4.45-4.74 (m, 2H), 4.40 (dd, J=6.3, 3.3 Hz, 1H), 3.71-4.04 (m, 2H), 3.49-3.70 (m, 5H), 3.35-3.49 (m, 3H), 3.08-3.32 (m, 3H), 2.52 (qd, J=6.6, 4.2 Hz, 1H), 2.09-2.27 (m, 1H). LCMS (m/z): 380.2 (M+1).

Step 7: N-(3-(3,4-dihydroisoquinolin-2(1H)-yl)-2-hydroxypropyl)-3-(1-methylpyrrolidin-3-yl)benzamide

To a solution of N-(3-(3,4-dihydroisoquinolin-2(1H)-yl)-2-hydroxypropyl)-3-(pyrrolidin-3-yl)benzamide (200 mg, 0.53 mmol) in MeOH (4 ml) was added HCHO (31.9 mg, 1.05 mmol) and NaBH₃CN (66.1 mg, 1.05 mmol) at 29° C. The mixture was then added AcOH (0.5 ml) at 29° C. and stirred for 16 h. The mixture was purified by prep-HPLC to give the title compound (29.6 mg, Yield 14.3%). ¹H NMR (CD₃OD, 400 MHz): δ 8.52 (brs, 2H), 7.88 (s, 1H), 7.78 (d, J=7.7 Hz, 1H), 7.53-7.60 (m, 1H), 7.43-7.52 (m, 1H), 7.22-7.33 (m, 3H), 7.15-7.21 (m, 1H), 4.36 (s, 3H), 3.78 (brs, 2H), 3.46-3.67 (m, 6H), 3.41 (brs, 1H), 3.07-3.19 (m, 3H), 3.01 (s, 3H), 2.50-2.64 (m, 1H), 2.19-2.34 (m, 1H). LCMS (m/z): 394.2 (M+1).

Compound 40 N-(3-(3,4-dihydroisoquinolin-2(1H)-yl)-2-hydroxypropyl)-2-methyl-3-((tetrahydro-2H-pyran-4-yl)amino)benzamide

Step 1: N-(3-(3,4-dihydroisoquinolin-2(1H)-yl)-2-hydroxypropyl)-2-methyl-3-nitrobenzamide

To a solution of 2-methyl-3-nitrobenzoic acid (1.0 g, 5.5 mmol) in DCM (20 mL) was added EDCI (1.58 g, 8.25 mmol), HOBt (1.11 g, 8.25 mmol), Et₃N (1.11 g, 11.0 mmol) and 1-amino-3-(3,4-dihydroisoquinolin-2(1H)-yl)propan-2-ol (1.36 g, 6.6 mmol). The mixture was stirred at 25° C. for 16 h. The reaction solution was washed with water and extracted with DCM. The organic layer was concentrated, and the residue was purified by column chromatography to give the title product (1.6 g, 78.8%). LCMS (m/z): 370.2 (M+1).

Step 2: 3-amino-N-(3-(3,4-dihydroisoquinolin-2(1H)-yl)-2-hydroxypropyl)-2-methyl benzamide

To a solution of N-(3-(3,4-dihydroisoquinolin-2(1H)-yl)-2-hydroxypropyl)-2-methyl-3-nitrobenzamide (1.6 g, 4.3 mmol) in EtOH (15 mL) and H₂O (15 mL) was added Fe powder (1.45 g, 25.8 mmol) and NH₄Cl (1.38 g, 25.8 mmol). The mixture was stirred at 60° C. for 4 h. The reaction solution was filtered, and the filtrate was concentrated to remove EtOH. The residue was diluted with water and extracted with DCM. The organic layer was concentrated to give the desired product (1.4 g, Yield 95.9%). The crude product was used in next step without further purification. LCMS (m/z): 340.1 (M+H).

Step 3: N-(3-(3,4-dihydroisoquinolin-2(1H)-yl)-2-hydroxypropyl)-2-methyl-3-((tetrahydro-2H-pyran-4-yl)amino)benzamide

To a solution of 3-amino-N-(3-(3,4-dihydroisoquinolin-2(1H)-yl)-2-hydroxypropyl)-2-methylbenzamide (200 mg, 0.59 mmol) in MeOH (8 mL) was added AcOH (0.05 mL) and dihydro-2H-pyran-4(3H)-one (118 mg, 1.18 mmol). The mixture was stirred at 25° C. for 2 h. NaBH₃CN (186 mg, 2.95 mmol) was added and the resulting mixture was stirred at 25° C. for 2 h. The reaction solution was concentrated and the residue was washed with water and extracted with EA. The organic layer was concentrated, and the residue was purified by prep-HPLC to give the title compound (24 mg, Yield 9.6%). ¹H NMR (CD₃OD, 400 MHz): δ 8.41 (s, 1H), 7.35-7.23 (m, 3H), 7.20 (d, J=7.0 Hz, 1H), 7.11 (t, J=7.8 Hz, 1H), 6.81 (d, J=8.3 Hz, 1H), 6.70 (d, J=7.3 Hz, 1H), 4.44 (s, 2H), 4.33 (brs, 1H), 3.99 (d, J=11.5 Hz, 2H), 3.66-3.43 (m, 7H), 3.38-3.16 (m, 4H), 2.15 (s, 3H), 2.01 (d, J=12.8 Hz, 2H), 1.63-1.48 (m, 2H). LCMS (m/z): 424.2 (M+1).

Compound 42 N-(3-(3,4-dihydroisoquinolin-2(1H)-yl)-2-hydroxypropyl)-3-(pyrrolidin-2-yl)benzamide

Step 1: tert-butyl 2-(3-((3-(3,4-dihydroisoquinolin-2(1H)-yl)-2-hydroxypropyl)carbamoyl) phenyl)pyrrolidine-1-carboxylate

A mixture of compound 3-(1-(tert-butoxycarbonyl)pyrrolidin-2-yl)benzoic acid (100 mg, 0.34 mmol), 1-amino-3-(3,4-dihydroisoquinolin-2(1H)-yl)propan-2-ol (70 mg, 0.34 mmol), BOPCl (100 mg, 0.41 mmol) and DIPEA (1 mL) in DCM (10 mL) was stirred at 25° C. for 4 h. The reaction mixture was diluted with water and extracted with DCM. The combined organic layers were washed with brine, dried over Na₂SO₄, concentrated and the residue was purified by prep-TLC to give the title product which was used directly in next step (150 mg, Yield 93%). LCMS (m/z): 480.2 (M+1).

Step 2: N-(3-(3,4-dihydroisoquinolin-2(1H)-yl)-2-hydroxypropyl)-3-(pyrrolidin-2-yl) benzamide

To a solution of tert-butyl 2-(3-((3-(3,4-dihydroisoquinolin-2(1H)-yl)-2-hydroxypropyl)carbamoyl)phenyl)pyrrolidine-1-carboxylate (100 mg, 0.11 mmol) in EA (10 mL) was added HCl (1M in EA, 4 mL). The reaction mixture was stirred at 25° C. for 16 h. The solvent was then removed by in vacuo and the crude product was purified by prep-HPLC to give the title compound (39.4 mg, Yield 52%). ¹H NMR (CD₃OD, 400 MHz): δ 7.80 (brs, 1H), 7.66 (d, J=7. Hz, 1H), 7.53 (d, J=7.6 Hz, 1H), 7.32-7.43 (m, 1H), 7.00-7.17 (m, 4H), 4.05-4.24 (m, 2H), 3.73-3.81 (m, 2H), 3.48-3.60 (m, 2H), 3.17-3.27 (m, 1H), 2.96-3.07 (m, 1H), 2.81-2.95 (m, 4H), 2.64-2.75 (m, 2H), 2.20-2.32 (m, 1H), 1.87-2.05 (m, 2H), 1.70-1.84 (m, 1H). LCMS (m/z): 380.2 (M+1).

Compound 44 (S)—N-(3-(3,4-dihydroisoquinolin-2(1H)-yl)-2-hydroxypropyl)-3-((tetrahydro-2H-pyran-4-yl)amino)benzamide

Step 1: (R)—2-(oxiran-2-ylmethyl)-1,2,3,4-tetrahydroisoquinoline

To a solution of 1,2,3,4-tetrahydroisoquinoline (10 g, 0.15 mol) in THF (100 mL) at 0° C. was added KF (22 g, 0.3 mmol). After 1 h, (S)-oxiran-2-ylmethyl 3-nitrobenzenesulfonate (21.4 g, 0.17 mmol) was added and the resulting solution was stirred at 22° C. for 16 h. The solid was removed by filtration and washed with THF. The solution was concentrated and the crude compound was used for next step without further purification (15 g, Yield 53%). LCMS (m/z): 190.1 (M+1).

Step 2: (S)-1-amino-3-(3,4-dihydroisoquinolin-2(1H)-yl)propan-2-ol

To a solution of (R)—2-(oxiran-2-ylmethyl)-1,2,3,4-tetrahydroisoquinoline (15 g, 0.08 mol) in EtOH (100 mL) at −78° C. was slowly bubbled NH₃ (g). The reaction mixture was then sealed and heated at 80° C. for 3 h. The reaction mixture was concentrated and the crude product was used in next step without further purification (15 g, Yield 92%). LCMS (m/z): 207.1 (M+1).

Step 3: Methyl 3-((tert-butoxycarbonyl)amino)benzoate

To a solution of methyl 3-aminobenzoate (2.0 g, 13.2 mmol) in THF (20 mL) was added Et₃N (2.67 g, 26.4 mmol) and Boc₂O (3.16 g, 14.5 mmol) at 0° C. The mixture was stirred at 25° C. for 16 h. The reaction solution was concentrated to remove THF, and the residue was washed with water and extracted with EA. The organic layer was concentrated, and the residue was purified by column chromatography to give the title product (1.6 g, Yield 48.5%). ¹H NMR (CD₃OD, 400 MHz): δ 8.12 (s, 1H), 7.64-7.60 (m, 2H), 7.37-7.33 (t, J=8 Hz, 1H), 3.89 (s, 3H), 1.52 (s, 9H). LCMS (m/z): 251.1 (M+1).

Step 4: (S)-tert-butyl(3-((3-(3,4-dihydroisoquinolin-2(1H)-yl)-2-hydroxypropyl) carbamoyl) phenyl)carbamate

A mixture of methyl 3-((tert-butoxycarbonyl)amino)benzoate (500 mg, 2 mmol) and (S)-1-amino-3-(3,4-dihydroisoquinolin-2(1H)-yl)propan-2-ol (618 mg, 3 mmol) in EtOH (1 mL) was heated at 120° C. for 3 h in a microwave reactor under N₂. The reaction solution was concentrated and the residue was purified by column chromatography to give the title product (500 mg, Yield 58.8%). LCMS (m/z): 426.2 (M+1).

Step 5: (S)-3-amino-N-(3-(3,4-dihydroisoquinolin-2(1H)-yl)-2-hydroxypropyl) benzamide

To a solution of (S)-tert-butyl-(3-((3-(3,4-dihydroisoquinolin-2(1H)-yl)-2-hydroxyl propyl)carbamoyl)phenyl)carbamate (500 mg, 1.18 mmol) in DCM (8 mL) was added TFA (8 mL). The mixture was stirred at 25° C. for 16 h. The reaction solution was concentrated to give the crude title product that was used without further purification (400 mg). LCMS (m/z): 326.2 (M+1).

Step 6: (S)—N-(3-(3,4-dihydroisoquinolin-2(1H)-yl)-2-hydroxypropyl)-3-((tetrahydro-2H-pyran-4-yl)amino)benzamide

To a solution of (S)-3-amino-N-(3-(3,4-dihydroisoquinolin-2(1H)-yl)-2-hydroxylpropyl)benzamide (400 mg, 1.23 mmol) in MeOH (8 mL) was added AcOH (0.05 mL) and dihydro-2H-pyran-4(3H)-one (123 mg, 1.23 mmol). The mixture was stirred at 25° C. for 2 h. NaBH₃CN (387 mg, 6.15 mmol) was added and the resulting mixture was stirred at 25° C. for 2 h. The reaction solution was concentrated, and the residue was washed with water and extracted with EA. The organic layer was concentrated, and the residue was purified by prep-HPLC to give the title compound (160 mg, Yield 31.8%). ¹H NMR (CD₃OD, 400 MHz): δ 7.94-7.76 (m, 2H), 7.63-7.56 (m, 1H), 7.56-7.49 (m, 1H), 7.32-7.24 (m, 3H), 7.21-7.15 (m, 1H), 4.71-4.55 (m, 1H), 4.52-4.28 (m, 2H), 4.05-3.95 (m, 2H), 3.92-3.70 (m, 2H), 3.62-3.46 (m, 3H), 3.46-3.33 (m, 4H), 3.28-3.02 (m, 2H), 1.99-1.85 (m, 2H), 1.82-1.66 (m, 2H). LCMS (m/z): 410.2 (M+1).

Compound 45 N-(3-(3,4-dihydroisoquinolin-2(1H)-yl)-2-hydroxypropyl)-3-((tetrahydrofuran-3-yl)amino)benzamide

Step 1: 2-(oxiran-2-ylmethyl)-1,2,3,4-tetrahydroisoquinoline

To a solution of 1,2,3,4-tetrahydroisoquinoline (15 g, 0.11 mol) in MeCN (100 mL) was added K₂CO₃ (30.7 g, 0.23 mol) at 0° C. 2-(bromomethyl)oxirane (17 g, 0.12 mol) was added to the reaction after 1 h. The solution was stirred at 22° C. for 16 h at which time the solids were filtered and washed with MeCN. The solution was concentrated and the residue was used in the next step without further purification (17 g, Yield 78%). LCMS (m/z): 190.1 (M+1).

Step 2: 1-amino-3-(3,4-dihydroisoquinolin-2(1H)-yl)propan-2-ol

To a solution of 2-(oxiran-2-ylmethyl)-1,2,3,4-tetrahydroisoquinoline (17 g, 0.09 mol) in EtOH (300 mL) at −78° C. was slowly bubbled NH₃ (g). The reaction mixture was then sealed and heated at 80° C. for 3 h. The reaction mixture was concentrated and the crude product was used in next step without further purification (18 g, Yield 96%). LCMS (m/z): 207.1 (M+1).

Step 3: tert-butyl (3-((3-(3,4-dihydroisoquinolin-2(1H)-yl)-2-hydroxypropyl) carbamoyl)phenyl)carbamate

To a solution of 3-((tert-butoxycarbonyl)amino)benzoic acid (2.5 g, 10.5 mmol) in DCM (25 mL) was added EDCI (3.0 g, 15.7 mmol), HOBt (2.1 g, 15.7 mmol), Et₃N (2.1 g, 21 mmol) and 1-amino-3-(3,4-dihydroisoquinolin-2(1H)-yl)propan-2-ol (2.2 g, 10.5 mmol). The mixture was stirred at 25° C. for 16 h. The reaction solution was washed with water and extracted with DCM. The organic layer was concentrated, and the residue was purified by column chromatography to give the title product (3.2 g, 71%). LCMS (m/z): 426.3 (M+1).

Step 5: 3-amino-N-(3-(3,4-dihydroisoquinolin-2(1H)-yl)-2-hydroxypropyl) benzamide

To a solution of tert-butyl (3-((3-(3,4-dihydroisoquinolin-2(1H)-yl)-2-hydroxypropyl)carbamoyl)phenyl)carbamate (500 mg, 1.18 mmol) in DCM (5 mL) was added TFA (5 mL). The mixture was stirred at 25° C. for 16 h. The reaction solution was concentrated, and the residue was dissolved in water, the pH was adjused to 7-7.5 with saturated aqueous of NaHCO₃ and extracted with EA. The organic layer was concentrated to give the title product that was used in the next step without further purifcation (450 mg). LCMS (m/z): 326.2 (M+1).

Step 6: N-(3-(3,4-dihydroisoquinolin-2(1H)-yl)-2-hydroxypropyl)-3-((tetrahydrofuran-3-yl)amino)benzamide

To a solution of 3-amino-N-(3-(3,4-dihydroisoquinolin-2(1H)-yl)-2-hydroxypropyl)benzamide (100 mg, 0.31 mmol) in MeOH (5 mL) was added AcOH (0.05 mL) and dihydrofuran-3(2H)-one (27 mg, 0.31 mmol). The mixture was stirred at 22° C. for 2 h. NaBH₃CN (98 mg, 1.55 mmol) was added and the resulting mixture was stirred at 22° C. for 2 h. The reaction solution was concentrated, and the residue was washed with water, extracted with EA, the organic layer was concentrated, and the residue was purified by prep-HPLC to give the title compound (22 mg, Yield 18.0%). ¹H NMR (CD₃OD, 400 MHz): δ 7.14-6.95 (m, 7H), 6.80-6.71 (m, 1H), 4.14-4.03 (m, 2H), 3.99-3.89 (m, 2H), 3.87-3.78 (m, 1H), 3.75-3.69 (m, 2H), 3.67-3.61 (m, 1H), 3.55-3.41 (m, 2H), 2.91-2.79 (m, 4H), 2.71-2.57 (m, 2H), 2.32-2.19 (m, 1H), 1.91-1.79 (m, 1H). LCMS (m/z): 396.2 (M+1).

Compound 46 N-(3-(3,4-dihydroisoquinolin-2(1H)-yl)-2-hydroxypropyl)-3-(morpholine-4-carbonyl)benzamide

Step 1: methyl 3-(morpholine-4-carbonyl)benzoate

To a solution of 3-(methoxycarbonyl)benzoic acid (200 mg, 1.11 mmol) in DCM (10 mL) were added morpholine (200 mg, 2.30 mmol) and TEA (300 mg, 2.96 mmol) and the resulting solution was stirred for 10 min at 20° C. To the mixture was added HATU (500 mg, 1.31 mmol) and the reaction mixture was stirred at 20° C. for 1 h. The mixture was concentrated and the residue was purified via column chromatography to obtain the title product (250 mg, Yield 90.5%). LCMS (m/z): 250.1 (M+1).

Step 2: 3-(morpholine-4-carbonyl)benzoic acid

To a solution of methyl methyl-3-(morpholine-4-carbonyl)benzoate (300 mg, 1.11 mmol) in MeOH (2 mL) and water (2 mL) was added LiOH (100 mg, 2.38 mmol) at 20° C. The mixture was heated to 60° C. for 1 h under N₂. The reaction solution was concentrated in vacuo and diluted with water. The pH was adjusted to 4 with 2N HCl and the aqueous layer was extracted with DCM. The organic layer was concentrated to dryness and obtained the title product that was used in the next reaction without further purification (250 mg, Yield 96%). LCMS (m/z): 236.2 (M+1).

Step 3: N-(3-(3,4-dihydroisoquinolin-2(1H)-yl)-2-hydroxypropyl)-3-(morpholine-4-carbonyl)benzamide

To a solution of 3-(morpholine-4-carbonyl)benzoic acid (300 mg crude, 0.48 mmol) in MeCN (5 mL) was added 1-amino-3-(3,4-dihydroisoquinolin-2(1H)-yl)-propan-2-ol (100 mg, 0.49 mmol), and TEA (250 mg, 2.48 mmol) and the resulting mixture was stirred at 20° C. for 10 min. BOPCl (120 mg, 0.49 mmol) was added and the reaction mixture was stirred at 20° C. for 1 h. After evaporation of the solvent, the residue was purified by prep-HPLC to give the title compound (15.2 mg, Yield 7.5%). ¹H NMR (CD₃OD, 400 MHz): δ 7.85-7.94 (m, 2H), 7.60 (d, J=7.8 Hz, 1H), 7.50 (t, J=7.7 Hz, 1H), 7.08-7.16 (m, 3H), 7.01-7.07 (m, 1H), 4.14 (quin, J=6.0 Hz, 1H), 3.76 (s, 6H), 3.54-3.68 (m, 3H), 3.47 (dd, J=6.8, 13.6 Hz, 3H), 2.80-2.98 (m, 4H), 2.63-2.74 (m, 2H). LCMS (m/z): 424.2 (M+1).

Compound 49 N-(3-(3,4-dihydroisoquinolin-2(1H)-yl)-2-hydroxypropyl)-3-(methyl(tetrahydro-2H-pyran-4-yl)amino)benzamide

Step 1. tert-butyl-(3-((3-(3,4-dihydroisoquinolin-2(1H)-yl)-2-hydroxypropyl) carbamoyl)phenyl)carbamate

To a solution of 3-((tert-butoxycarbonyl)amino)benzoic acid (2.5 g, 10.5 mmol) in DCM (25 mL) was added EDCI (3.0 g, 15.7 mmol), HOBt (2.1 g, 15.7 mmol), Et₃N (2.1 g, 21 mmol) and 1-amino-3-(3,4-dihydroisoquinolin-2(1H)-yl)propan-2-ol (2.2 g, 10.5 mmol). The mixture was stirred at 25° C. for 16 h. The reaction solution was washed with water and extracted with DCM. The organic layer was concentrated, and the residue was purified by column chromatography to give the title product (3.2 g, Yield 71%). LCMS (m/z): 426.3 (M+1).

Step 2. 3-amino-N-(3-(3,4-dihydroisoquinolin-2(1H)-yl)-2-hydroxypropyl) benzamide

To a solution of tert-butyl (3-((3-(3,4-dihydroisoquinolin-2(1H)-yl)-2-hydroxypropyl)carbamoyl)phenyl)carbamate (500 mg, 1.18 mmol) in DCM (5 mL) was added TFA (5 mL). The mixture was stirred at 25° C. for 16 h. The reaction solution was concentrated, and the residue was dissolved in water, the pH was adjusted to 7-7.5 with saturated aqueous of NaHCO₃ and extracted with EA. The organic layer was concentrated to give the title product that was used in the next step without further purification (450 mg, crude). LCMS (m/z): 326.2 (M+1).

Step 3. N-(3-(3,4-dihydroisoquinolin-2(1H)-yl)-2-hydroxypropyl)-3-(methyl (tetrahydro-2H-pyran-4-yl)amino)benzamide

To a solution of N-(3-(3,4-dihydroisoquinolin-2(1H)-yl)-2-hydroxypropyl)-3-((tetrahydro-2H-pyran-4-yl)amino)benzamide (300 mg, 0.73 mmol) in MeOH (6 mL) was added AcOH (0.05 mL) and HCHO (548 mg, 7.3 mmol, 40% w/w). The mixture was stirred at 20° C. for 2 h. NaBH₃CN (276 mg, 4.38 mmol) was added and the resulting mixture was stirred at 20° C. for 16 h. The reaction solution was concentrated, the residue was washed with water and extracted with EA. The organic layer was concentrated, and the residue was purified by prep-HPLC to give the title compound (105 mg, Yield 33.9%). ¹H NMR (CD₃OD, 400 MHz): δ 7.37-7.29 (m, 1H), 7.23-7.17 (m, 1H), 7.17-6.97 (m, 6H), 4.18-4.08 (m, 1H), 4.07-3.90 (m, 3H), 3.80-3.68 (m, 2H), 3.62-3.51 (m, 3H), 3.51-3.43 (m, 1H), 2.99-2.79 (m, 7H), 2.75-2.58 (m, 2H), 1.94-1.79 (m, 2H), 1.72-1.59 (m, 2H). LCMS (m/z): 424.1 (M+1).

Compound 50 N-(3-(3,4-dihydroisoquinolin-2(1H)-yl)-2-hydroxypropyl)-3-(oxetan-3-ylamino)benzamide

Step 1: N-(3-(3,4-dihydroisoquinolin-2(1H)-yl)-2-hydroxypropyl)-3-(oxetan-3-ylamino)benzamide

To a solution of 3-amino-N-(3-(3,4-dihydroisoquinolin-2(1H)-yl)-2-hydroxypropyl)benzamide (100 mg, 0.31 mmol) in MeOH (5 mL) was added AcOH (0.05 mL) and oxetan-3-one (22 mg, 0.31 mmol). The mixture was stirred at 22° C. for 2 h. NaBH₃CN (98 mg, 1.55 mmol) was added, and the resulting mixture was stirred at 22° C. for 2 h. The reaction solution was concentrated, the residue was washed with water, extracted with EA, the organic layer was concentrated, and the residue was purified by prep-HPLC to give the title compound (17 mg, Yield 14.4%). ¹H NMR (CD₃OD, 400 MHz): δ 7.17-6.97 (m, 6H), 6.96-6.88 (m, 1H), 6.72-6.62 (m, 1H), 5.03-4.95 (m, 2H), 4.67-4.59 (m, 1H), 4.59-4.49 (m, 2H), 4.15-4.04 (m, 1H), 3.80-3.69 (m, 2H), 3.56-3.40 (m, 2H), 2.96-2.79 (m, 4H), 2.73-2.58 (m, 2H). LCMS (m/z): 382.2 (M+1).

Compound 51 N-(3-(3,4-dihydroisoquinolin-2(1H)-yl)-2-hydroxypropyl)-3-(morpholinomethyl)benzamide

Step 1: methyl 3-(morpholinomethyl)benzoate

To a solution of methyl 3-formylbenzoate (100 mg, 0.61 mmol) in MeOH (5 mL) was added morpholine (100 mg, 1.15 mmol) and the resulting mixture was stirred for 10 min at 20° C. To the mixture was added NaBH₃CN (100 mg, 1.59 mmol) and the reaction mixture was stirred for 30 min at 20° C. The solution was concentrated and the residue was purified by prep-TLC to afford the title compound (130 g, Yield 90.9%). ¹H NMR (CD₃OD, 400 MHz): δ 7.98-8.05 (m, 1H), 7.92 (td, J=1.4, 7.7 Hz, 1H), 7.57-7.62 (m, 1H), 7.37-7.53 (m, 1H), 3.90 (s, 3H), 3.66-3.71 (m, 4H), 3.57 (s, 2H), 2.41-2.49 (m, 4H).

Step 2: 3-(morpholinomethyl)benzoic acid

To a solution of methyl 3-(morpholinomethyl)benzoate (150 mg, 0.64 mmol) in MeOH (2 mL) and water (2 mL) was added LiOH (55 mg, 1.31 mmol) at 20° C. The mixture was heated to 60° C. for 1 h. The reaction solution was concentrated and purified via prep-HPLC to give the title compound (60 mg, Yield 42.5%). LCMS (m/z): 222 (M+1).

Step 3: N-(3-(3,4-dihydroisoquinolin-2(1H)-yl)-2-hydroxypropyl)-3-(morpholinomethyl)benzamide

To a solution of 3-(morpholinomethyl)benzoic acid (60 mg, 0.27 mmol) in MeCN (3 mL) were added 1-amino-3-(3,4-dihydroisoquinolin-2(1H)-yl)propan-2-ol (60 mg, 0.29 mmol), TEA (70 mg, 0.69 mmol) and the resulting mixture was stirred at 20° C. for 10 min. BOPCl (70 mg, 0.28 mmol) was added and the reaction mixture was stirred at 20° C. for 16 h. The reaction solution was concentrated and the residue was purified by prep-HPLC to give the title compound (4 mg, Yield 3.6%). ¹H NMR (CD₃OD, 400 MHz): δ 7.77 (s, 1H), 7.68 (d, J=7.8 Hz, 1H), 7.50 (d, J=7.7 Hz, 1H), 7.35 (t, J=7.7 Hz, 1H), 7.07-7.14 (m, 3H), 7.00-7.06 (m, 1H), 4.11 (quin, J=6.0 Hz, 1H), 3.75 (s, 2H), 3.64-3.72 (m, 4H), 3.43-3.59 (m, 4H), 2.83-2.93 (m, 4H), 2.61-2.74 (m, 2H), 2.44 (brs, 4H). LCMS (m/z): 410.1 (M+1).

Compound 52 N-(3-(3,4-dihydroisoquinolin-2(1H)-yl)-2-hydroxypropyl)-3-((1-(tetrahydro-2H-pyran-4-yl)ethyl)amino)benzamide

Step 1: N-(3-(3,4-dihydroisoquinolin-2(1H)-yl)-2-hydroxypropyl)-3-((1-(tetrahydro-2H-pyran-4-yl)ethyl)amino)benzamide

A solution of 3-amino-N-(3-(3,4-dihydroisoquinolin-2(1H)-yl)-2-hydroxypropyl) benzamide (130 mg, 0.4 mmol), 1-(tetrahydro-2H-pyran-4-yl)ethanone (52 mg, 0.4 mmol) and AcOH (0.1 mL) in MeOH (10 mL). The mixture was stirred at 22° C. for 1 h, then NaBH₃CN (76 mg, 1.2 mmol) was added. The mixture was stirred at 22° C. for 4 h. The reaction mixture was concentrated and quenched with water. The mixture solution was extracted with DCM, the combined organic layers were concentrated and the residue was purified by prep-TLC to give the desired compound (14.0 mg, Yield 8%). ¹H NMR (CD₃OD, 400 MHz): δ 6.90-7.07 (m, 6H), 6.81 (d, J=7.5 Hz, 1H), 6.64 (d, J=8.03 Hz, 1H), 3.98-4.04 (m, 1H), 3.87 (d, J=11.3 Hz, 2H), 3.70 (s, 2H), 3.28-3.45 (m, 5H), 2.82 (brs, 4H), 2.56-2.65 (m, 2H), 1.70 (d, J=13.8 Hz, 1H), 1.57 (brs, 1H), 1.17-1.37 (m, 3H), 1.04 (d, J=6.3 Hz, 3H). LCMS (m/z): 438.3 (M+1).

Compound 53 N-(3-(3,4-dihydroisoquinolin-2(1H)-yl)-2-hydroxypropyl)-3-((2,2-dimethyltetrahydro-2H-pyran-4-yl)amino)benzamide

Step 1: N-(3-(3,4-dihydroisoquinolin-2(1H)-yl)-2-hydroxypropyl)-3-((2,2-dimethyltetrahydro-2H-pyran-4-yl)amino)benzamide

A solution of 3-amino-N-(3-(3,4-dihydroisoquinolin-2(1H)-yl)-2-hydroxypropyl) benzamide (130 mg, 0.4 mmol), 2,2-dimethyldihydro-2H-pyran-4(3H)-one (52 mg, 0.4 mmol) and AcOH (0.1 mL) in MeOH (10 mL). The mixture was stirred at 22° C. for 12 h, then NaBH₃CN (76 mg, 1.2 mmol) was added and the resulting mixture was stirred at 22° C. for 2 h. The reaction mixture was concentrated and quenched with water. The aqueous mixture was extracted with DCM, the combined organic layers were concentrated and the residue was purified by prep-HPLC to give the title compound (5.5 mg, Yield 3.1%). ¹H NMR (CD₃OD, 400 MHz): δ 8.42 (brs, 1H) 7.00-7.33 (m, 7H) 6.84 (d, J=7.8 Hz, 1H) 4.21-4.41 (m, 3H) 3.40-3.92 (m, 8H) 3.11-3.20 (m, 3H) 1.91-2.07 (m, 2H) 1.18-1.44 (m, 8H). LCMS (m/z): 438.3 (M+1).

Compound 54 N-(3-(3,4-dihydroisoquinolin-2(1H)-yl)-2-hydroxypropyl)-5-((tetrahydro-2H-pyran-4-yl)amino)nicotinamide

Step 1. 5-bromo-N-(3-(3,4-dihydroisoquinolin-2(1H)-yl)-2-hydroxypropyl)nicotinamide

A solution of 1-amino-3-(3,4-dihydroisoquinolin-2(1H)-yl)propan-2-ol (326 mg, 1.58 mmol), 5-bromonicotinic acid (300 mg, 1.5 mmol), HATU (627 mg, 1.65 mmol) and TEA (181.8 mg, 1.8 mmol) in DCM (15 mL) was stirred at 22° C. for 2 h, at which time the reaction mixture was diluted with water and extracted with DCM. The combined organic layers were dried and concentrated and the residue was purified by column chromatography to give title compound that was used in the next step without further purification (200 mg, Yield 34%). LCMS (m/z): 390/392 (M+1/M+2).

Step 2: N-(3-(3,4-dihydroisoquinolin-2(1H)-yl)-2-hydroxypropyl)-5-((tetrahydro-2H-pyran-4-yl)amino)nicotinamide

To a solution of 5-bromo-N-(3-(3,4-dihydroisoquinolin-2(1H)-yl)-2-hydroxypropyl) nicotinamide (100 mg, 0.26 mmol) in dioxane (10 mL) were added tetrahydro-2H-pyran-4-amine (39.4 mg, 0.29 mmol), Pd₂(dba)₃ (20 mg, 0.02 mmol), NaOtBu (24 mg, 0.52 mmol) and BINAP (26 mg, 0.04 mmol). The reaction mixture was heated at 110° C. for 6 h under N₂. The mixture was concentrated and the residue was dissolved in EA, washed with water, the organic layer was collected, dried, and the residue purified by prep-HPLC to give the title compound (25.9 mg, Yield 24%). ¹H NMR (CD₃OD, 400 MHz): δ 8.17 (d, J=1.5 Hz, 1H), 8.05 (d, J=2.5 Hz, 1H), 7.43-7.35 (m, 1H), 7.13-7.06 (m, 3H), 7.04-6.99 (m, 1H), 4.17-4.07 (m, 1H), 4.02-3.93 (m, 2H), 3.73 (s, 2H), 3.63-3.50 (m, 4H), 3.41 (dd, J=6.8, 13.6 Hz, 1H), 2.94-2.82 (m, 4H), 2.70-2.57 (m, 2H), 2.03-1.93 (m, 2H), 1.57-1.45 (m, 2H). LCMS (m/z): 411.1 (M+1).

Compound 55 N-(3-(3,4-dihydroisoquinolin-2(1H)-yl)-2-hydroxypropyl)-4-((tetrahydro-2H-pyran-4-yl)amino)picolinamide

Step 1: methyl 4-((tetrahydro-2H-pyran-4-yl)amino)picolinate

To a solution of compound methyl 4-chloropicolinate (100 mg, 0.59 mmol), tetrahydro-2H-pyran-4-amine hydrochloride (121 mg, 0.88 mmol), Cs₂CO₃ (762 mg, 2.34 mmol), Pd₂(dba)₃ (54 mg, 0.059 mmol) and XPhos (28 mg, 0.06 mmol) in toluene (10 mL) was stirred and heated at 110° C. under N₂ for 16 h. The catalyst was filtered and the filtrate was washed with EA, concentrated in vacuo and the residue was purified by prep-TLC to give the title product (50 mg, Yield 36.2%). LCMS (m/z): 237.2 (M+1).

Step 2: N-(3-(3,4-dihydroisoquinolin-2(1H)-yl)-2-hydroxypropyl)-4-((tetrahydro-2H-pyran-4-yl)amino)picolinamide

To a solution of compound methyl 4-((tetrahydro-2H-pyran-4-yl)amino)picolinate (50 mg, 0.21 mmol) and 1-amino-3-(3,4-dihydroisoquinolin-2(1H)-yl)propan-2-ol (44 mg, 0.21 mmol) in MeOH (2 mL) was stirred at 100° C. under microwave heating for 3 h. The reaction mixture was purified by prep-HPLC to give the title compound (29.9 mg, Yield 34.4%). ¹H NMR (400 MHz, CD₃OD): δ 7.95 (d, J=5.6 Hz, 1H), 7.26 (d, J=2.4 Hz, 1H), 7.13-7.05 (m, 3H), 7.03-6.98 (m, 1H), 6.62 (dd, J=2.4, 5.6 Hz, 1H), 4.07 (quin, J=6.0 Hz, 1H), 4.01-3.93 (m, 2H), 3.72 (s, 2H), 3.66-3.60 (m, 1H), 3.60-3.57 (m, 1H), 3.57-3.52 (m, 2H), 3.49-3.42 (m, 1H), 2.95-2.89 (m, 2H), 2.87-2.81 (m, 2H), 2.65 (d, J=6.0 Hz, 2H), 1.97 (d, J=12.8 Hz, 2H), 1.59-1.47 (m, 2H). LCMS (m/z): 411.1 (M+1).

Compound 57 N-(3-(3,4-dihydroisoquinolin-2(1H)-yl)-2-hydroxypropyl)-2-fluoro-5-((tetrahydro-2H-pyran-4-yl)amino)benzamide

Step 1: 5-amino-N-(3-(3,4-dihydroisoquinolin-2(1H)-yl)-2-hydroxypropyl)-2-fluorobenzamide

The solution of 5-amino-2-fluorobenzoic acid (200 mg, 1.29 mmol) and HATU (490 mg, 1.29 mmol) in DCM (15 mL) was stirred at 17° C. for 30 min. Then 1-amino-3-(3,4-dihydroisoquinolin-2(1H)-yl)propan-2-ol (265 mg, 1.29 mmol) and DIPEA (333 mg, 2.58 mmol) was added and the resulting solution was stirred at 17° C. for 16 h. The solution was concentrated and the residue was purified by column chromatography to give desired product (372 mg, Yield 84%).

Step 2: N-(3-(3,4-dihydroisoquinolin-2(1H)-yl)-2-hydroxypropyl)-2-fluoro-5-((tetrahydro-2H-pyran-4-yl)amino)benzamide

A solution of 5-amino-N-(3-(3,4-dihydroisoquinolin-2(1H)-yl)-2-hydroxypropyl)-2-fluorobenzamide (372 mg, 1.08 mmol), dihydro-2H-pyran-4(3H)-one (108 mg, 1.08 mmol) and AcOH (0.05 mL) in MeOH (20 mL) was stirred at 17° C. for 2 h. Then NaBH₃CN (109 mg, 1.63 mmol) was added and the resulting solution was stirred at 17° C. for 4 h. The solution was concentrated and the residue was purified by column chromatography to afford the title product (121.5 mg, Yield 17.5%). ¹H NMR (CD₃OD, 400 MHz): δ 7.16-7.07 (m, 3H), 7.03 (dd, J=2.9, 5.9 Hz, 2H), 6.95 (dd, J=8.9, 10.7 Hz, 1H), 6.79 (td, J=3.6, 8.8 Hz, 1H), 4.11 (quin, J=6.0 Hz, 1H), 3.98 (d, J=11.5 Hz, 2H), 3.80-3.69 (m, 2H), 3.64-3.40 (m, 5H), 2.98-2.81 (m, 4H), 2.72-2.60 (m, 2H), 1.99 (d, J=12.8 Hz, 2H), 1.56-1.39 (m, 2H). LCMS (m/z): 428.2 (M+1).

Compound 58 N-(3-(3,4-dihydroisoquinolin-2(1H)-yl)-2-hydroxypropyl)-4-((tetrahydro-2H-pyran-4-yl)oxy)benzamide

Step 1: methyl 4-((tetrahydro-2H-pyran-4-yl)oxy)benzoate

To a solution of ethyl 4-hydroxybenzoate (500 mg, 3.0 mmol), tetrahydro-2H-pyran-4-ol (307.3 mg, 3.0 mmol) and PPh₃ (944 mg, 3.6 mmol) in THF (15 mL) was added DEAD (627 mg, 3.6 mmol) at 0° C. The mixture was the warmed to 21° C. and stirred for 16 h. The mixture was treated with water and the organic layer was washed with brine, dried over Na₂SO₄, concentrated and the residue was purified by column chromatography to give the title compound (320 mg, Yield 45%). ¹H NMR (CDCl₃, 400 MHz): δ 7.92 (d, J=8.9 Hz, 1H), 6.75-6.94 (m, 1H), 4.44-4.59 (m, 1H), 4.28 (d, J=7.2 Hz, 2H), 3.83-4.00 (m, 2H), 3.46-3.60 (m, 2H), 1.88-2.05 (m, 2H), 1.67-1.83 (m, 2H), 1.31 (t, J=7.2 Hz, 3H).

Step 2: 4-((tetrahydro-2H-pyran-4-yl)oxy benzoic acid

To a solution of methyl 4-((tetrahydro-2H-pyran-4-yl)oxy)benzoate (400 mg, 1.6 mmol) in MeOH (10 ml) was added a solution of NaOH (128 mg, 3.2 mmol) in H₂O (4 mL) at 22° C. The mixture was stirred at 50° C. for 4 h. The mixture was concentrated and the residue was treated with water and extracted with EA. The water layer was treated with 2N HCl to pH=3. The water layer was then extracted with EA. The organic layer was washed with brine, dried over Na₂SO₄ and concentrated to give the title product which was used in next step without further purification (350 mg, Yield 98.6%). ¹H NMR (CDCl₃, 400 MHz): δ 8.08 (d, J=8.9 Hz, 2H), 6.98 (d, J=8.9 Hz, 2H), 4.64 (tt, J=7.7, 3.8 Hz, 1H), 3.95-4.09 (m, 2H), 3.64 (ddd, J=11.6, 8.2, 3.3 Hz, 2H), 2.01-2.13 (m, 2H), 1.78-1.93 (m, 2H).

Step 3: N-(3-(3,4-dihydroisoquinolin-2(1H)-yl)-2-hydroxypropyl)-4-((tetrahydro-2H-pyran-4-yl)oxy)benzamide

To a solution of 4-((tetrahydro-2H-pyran-4-yl)oxy)benzoic acid (150 mg, 0.67 mmol) in DMF (4 mL) was added DIEA (260 mg, 2.01 mmol), HATU (384 mg, 1.01 mmol) and 1-amino-3-(3,4-dihydroisoquinolin-2(1H)-yl)propan-2-ol (170 mg, 0.81 mmol). The reaction mixture was stirred at 22° C. for 16 h. The mixture was treated with water and extracted with EA. The organic layer was washed with brine, dried over Na₂SO₄, concentrated and the residue was was purified by prep-HPLC to give the title compound (206.1 mg, Yield 74.9%). ¹H NMR (CD₃OD, 400 MHz): δ 7.84 (d, J=8.8 Hz, 2H), 7.26-7.37 (m, 3H), 7.19-7.25 (m, 1H), 7.05 (d, J=8.8 Hz, 2H), 4.59-4.74 (m, 2H), 4.31-4.49 (m, 2H), 3.93-4.01 (m, 2H), 3.86 (brs, 1H), 3.63 (ddd, J=11.7, 8.8, 3.0 Hz, 2H), 3.53 (qd, J=14.0, 5.7 Hz, 3H), 3.37-3.44 (m, 1H), 3.11-3.32 (m, 3H), 2.02-2.12 (m, 2H), 1.69-1.81 (m, 2H). LCMS (m/z): 411.2 (M+1).

Compound 166 (S)—N-(3-(3,4-dihydroisoquinolin-2(1H)-yl)-2-hydroxypropyl)-6-(oxetan-3-ylamino)pyrimidine-4-carboxamide

Step 1: 6-Hydroxypyrimidine-4-carboxylic acid

To a solution of sodium (Z)-1,4-diethoxy-1,4-dioxobut-2-en-2-olate (55.0 g, 262 mmol) in H₂O (500 mL) was added formimidamide acetate (27.3 g, 262 mmol) and NaOH (10.5 g). After addition, the resulting mixture was stirred at 25° C. for 16 h then concentrated and then acidified by added aqueous HCl (1N) until pH=1. The resulting solid was collected by filtration, washed with H₂O and ether to give 6-hydroxypyrimidine-4-carboxylic acid (6.0 g, yield: 16.3%). ¹H NMR (400 MHz, DMSO-d₆) δ 12.89 (s, 1H), 8.24 (s, 1H), 6.83 (s, 1H).

Step 2: 6-chloropyrimidine-4-carboxylic acid

To a solution of 6-hydroxypyrimidine-4-carboxylic acid (6.0 g, 42.8 mmol) in EtOAc (90 mL) was added (COCl)₂ (12 mL) dropwise, followed by a few drops of DMF. The mixture was stirred at 75° C. for 3 h, and then at 25° C. for 16 h. The solvent was evaporated to give the crude 6-chloropyrimidine-4-carboxylic acid (6.3 g, yield: 92.9%). ¹H NMR (400 MHz, DMSO-d₆) δ 8.31 (s, 1H), 6.88 (s, 1H).

Step 3: 6-chloropyrimidine-4-carbonyl chloride

A drop of DMF was added to a stirred solution of 6-chloropyrimidine-4-carboxylic acid (5.5 g, 34.7 mmol) and (COCl)₂ (12 mL) in DCM (100 mL). The mixture was stirred at 25° C. for 2 h. The solvent was evaporated under reduced pressure to give crude 6-chloropyrimidine-4-carbonyl chloride (6.0 g, yield: 97.7%). ¹H NMR (400 MHz, DMSO-d₆) δ 9.20 (s, 1H), 8.10 (s, 1H).

Step 4: (S)-6-chloro-N-(3-(3,4-dihydroisoquinolin-2(1H)-yl)-2-hydroxypropyl)pyrimidine-4-carboxamide

To a stirred and cooled (0° C.) solution of (S)-1-amino-3-(3,4-dihydroisoquinolin-2(1H)-yl) propan-2-ol (7.15 g, 34.7 mmol) and Et₃N (14.0 g, 138.8 mmol) in DCM (100 mL) was added 6-chloropyrimidine-4-carbonyl chloride (5.5 g, 34.7 mmol). After addition, the resulting mixture was stirred at 25° C. for 16 h, at which time LCMS showed the completion of the reaction. The solvent was evaporated and the residue purified by flash chromatography to give the (S)-6-chloro-N-(3-(3,4-dihydroisoquinolin-2(1H)-yl)-2-hydroxypropyl)pyrimidine-4-carboxamide (7.2 g, yield: 60%). LCMS (m/z): 347.0 [M+H]⁺

Step 5: (S)—N-(3-(3,4-dihydroisoquinolin-2(1H)-yl)-2-hydroxypropyl)-6-(oxetan-3-ylamino)pyrimidine-4-carboxamide

To a solution of (S)-6-chloro-N-(3-(3,4-dihydroisoquinolin-2(1H)-yl)-2-hydroxy propyl)pyrimidine-4-carboxamide (347 mg, 1 mmol) in i-PrOH (5 mL) was added oxetan-3-amine (73.1 mg, 1 mmol) and DIPEA (129 mg, 1 mmol). The resulting mixture was stirred at 110° C. for 16 hours, at which time LCMS showed the completion of the reaction. After evaporation of the solvent, the residue was purified by preparative HPLC to give the target compound (S)—N-(3-(3,4-dihydroisoquinolin-2(1H)-yl)-2-hydroxypropyl)-6-(oxetan-3-ylamino)pyrimidine-4-carboxamide (62.5 mg, yield: 16.3%). ¹H NMR (400 MHz, MeOD-d₄) δ 8.24 (s, 1H), 7.15-7.05 (m, 4H), 7.02-6.98 (m, 1H), 5.09 (s, 1H), 4.95 (t, J=6.8 Hz, 2H), 4.59 (t, J=6.3 Hz, 2H), 4.10-4.03 (m, 1H), 3.72 (s, 2H), 3.56-3.46 (m, 2H), 2.96-2.91 (m, 2H), 2.87-2.80 (m, 2H), 2.65 (d, J=6.3 Hz, 2H). LCMS (m/z): 384.1 [M+H]⁺.

Compound 166 (S)—N-(3-(3,4-dihydroisoquinolin-2(1H)-yl)-2-hydroxypropyl)-6-(oxetan-3-ylamino)pyrimidine-4-carboxamide

Step 1: (R)—2-(oxiran-2-ylmethyl)-1,2,3,4-tetrahydroisoquinoline

To a solution of 1,2,3,4-tetrahydroisoquinoline (400 g, 6 mol) in THF(4000 mL) was added KF (880 g, 9 mol) and (S)-oxiran-2-ylmethyl 3-nitrobenzenesulfonate (856 g, 6.8 mol) at 0° C. After the addition was complete, the resulting mixture was stirred at 20° C. for 16 h then filtered. The filtrate was concentrated in vacuum to give the desired product (400 g, crude) which was used for next step without the further purification. LCMS (m/z): 190.1 (M+1).

Step 2: (S)-1-amino-3-(3,4-dihydroisoquinolin-2(1H)-yl)propan-2-ol

A solution of (R)—2-(oxiran-2-ylmethyl)-1,2,3,4-tetrahydroisoquinoline (80 g, 0.42 mol) in NH₃/EtOH (10000 mL) was sealed and stirred at 80° C. for 3 h. After completion, the reaction mixture was concentrated in vacuum. Ten batches were run in parallel then combined and residue was purified with column separation to afford desired product (480 g, Yield 55%) which was used for next step without the further purification. ¹H NMR (400 MHz, MeOD) δ 7.17-7.08 (m, 3H), 7.07-7.02 (m, 1H), 3.92-3.84 (m, 1H), 3.77-3.68 (m, 2H), 2.97-2.90 (m, 2H), 2.88-2.83 (m, 2H), 2.82-2.76 (m, 1H), 2.67-2.60 (m, 1H), 2.60-2.55 (m, 2H). LCMS (m/z): 207.1 (M+1).

Step 3: 6-chloropyrimidine-4-carbonyl chloride

To a stirred mixture of 6-hydroxypyrimidine-4-carboxylic acid (25 g, 0.18 mol) in EA (300 mL) was added oxalyl dichloride (113 g, 0.89 mol) dropwise. The mixture was stirred at 20° C. for 0.5 hour, and then DMF (2 mL) was added to the mixture. The resulting mixture then was stirred at 80° C. for 16 hours. The mixture was next concentrated under reduce pressure to give the crude product as black solid which was used in next step without further purification. Sixteen batches were run in parallel and produced a combined crude product weight of 480 g.

Step 4: (S)-6-chloro-N-(3-(3,4-dihydroisoquinolin-2(1H)-yl)-2-hydroxypropyl)pyrimidine-4-carboxamide

To a stirred mixture of (S)-1-amino-3-(3,4-dihydroisoquinolin-2(1H)-yl)propan-2-ol (30 g, 0.146 mol), and Et₃N (21.6 g 0.21 mol) in DCM (400 mL) was added 6-chloropyrimidine-4-carbonyl chloride (30 g crude in 200 mL of DCM) dropwise at −60° C. in 1 h. After addition, the mixture was warmed up to 10° C. slowly, and the stirring was continued for 1 h. The mixture was quenched by addition of water and the layers were separated. The organic phase was concentrated under reduced pressure. The residue was purified by flash chromatography (EA˜DCM:MeOH=10:1) to give title compound. Sixteen batches were run in parallel and produced a combined crude product weight of 409 g, yield: 38% as a yellow solid. LCMS (m/z): 347.2 [M+H]⁺; ¹H NMR (400 MHz, MeOD-d4) δ 8.73 (d, J=1.0 Hz, 1H), 8.07 (d, J=1.1 Hz, 1H), 7.17-7.06 (m, 3H), 7.00 (d, J=7.3 Hz, 1H), 5.51 (s, 1H), 4.12 (q, J=6.0 Hz, 1H), 3.74 (s, 2H), 3.64-3.53 (m, 2H), 2.94 (q, J=5.7 Hz, 2H), 2.92-2.81 (m, 2H), 2.78-2.64 (m, 2H).

Step 5: (S)—N-(3-(3,4-dihydroisoquinolin-2(1H)-yl)-2-hydroxypropyl)-6-(oxetan-3-ylamino)pyrimidine-4-carboxamide

A mixture of (S)-6-chloro-N-(3-(3,4-dihydroisoquinolin-2(1H)-yl)-2-hydroxypropyl)pyrimidine-4-carboxamide (45 g, 129 mmol) and oxetan-3-amine (9.5 g, 129 mmol), Et₃N (15.7 g, 155 mmol) in i-PrOH (150 mL) was stirred at 60° C. for 16 h, at which time LCMS showed the completion of the reactions. The mixture was concentrated and the residue was purified by flash chromatography (DCM:MeOH=10:1) to afford the crude product. Nine batches were run in parallel and produced a combined crude product which was then re-crystallized by MeOH/H₂O to give 101 g (yield: 22.6%) of product as a white solid. ¹H NMR (400 MHz, MeOD-d4) δ 8.29-8.22 (m, 1H), 7.17-7.06 (m, 4H), 7.06-6.99 (m, 1H), 5.11 (br. s., 1H), 4.97 (t, J=6.8 Hz, 2H), 4.61 (t, J=6.3 Hz, 2H), 4.09 (quin, J=6.0 Hz, 1H), 3.73 (s, 2H), 3.62-3.45 (m, 2H), 2.98-2.91 (m, 2H), 2.91-2.79 (m, 2H), 2.67 (d, J=6.1 Hz, 2H); LCMS (m/z): 384.2 [M+H]⁺.

Compound 84 N-(3-(3,4-dihydroisoquinolin-2(1H)-yl)-2-hydroxypropyl)-2-methylquinoline-6-carboxamide

Step 1: 2-(oxiran-2-ylmethyl)-1,2,3,4-tetrahydroisoquinoline

To a stirring solution of 1,2,3,4-tetrahydroisoquinoline (15 g, 0.11 mol) in MeCN (100 mL) at 0° C. was added K₂CO₃ (30.7 g, 0.23 mol), then 2-(bromomethyl) oxirane (17 g, 0.12 mol) added slowly over a period of 1 h. After the addition the solution was stirred at 21° C. for 12 h. The resulting solid was then removed by filtration and washed with MeCN and the combined organic filtrate was concentrated under reduced pressure to give the crude product. This residue was used into next step without further purification (17 g, Yield: 78%). LCMS (m/z): 190.1 (M+1).

Step 2: 1-amino-3-(3,4-dihydroisoquinolin-2(1H)-yl)propan-2-ol

NH₃ was bubbled into a stirred and cooled (−78° C.) solution of 2-(oxiran-2-ylmethyl)-1,2,3,4-tetrahydroisoquinoline (17 g, 0.09 mol) in EtOH (300 mL). After saturation, the reaction mixture was then sealed and heated at 80° C. for 3 h. After LCMS indicated the reaction to be complete, the reaction mixture was concentrated and the crude product used in the next step without further purification (18 g, Yield 96%). LCMS (m/z): 207.1 (M+1).

Step 3: N-(3-(3,4-dihydroisoquinolin-2(1H)-yl)-2-hydroxypropyl)-2-methylquinoline-6-carboxamide

To a solution of 2-methylquinoline-6-carboxylic acid (100 mg, 0.535 mmol) in DCM (20 mL) was added HATU (244 mg, 0.642 mmol) and TEA (162 mg, 1.604 mmol). The mixture was stirred at 15° C. for 30 minutes before 1-amino-3-(3,4-dihydro isoquinolin-2(1H)-yl)propan-2-ol (110 mg, 0.535 mmol) was added. The resulting mixture was stirred for another 16 h at 15° C., at which point LCMS showed the completion of the reaction. The mixture was concentrated and the residue was purified by Preparation HPLC to give the desired title compound (106.2 mg, 53%). ¹H NMR (400 MHz, METHANOL-d₄) 6=8.32 (d, J=1.9 Hz, 1H), 8.14 (d, J=8.4 Hz, 1H), 8.09 (dd, J=2.1, 8.8 Hz, 1H), 7.93 (d, J=8.8 Hz, 1H), 7.49 (d, J=8.4 Hz, 1H), 7.16-7.08 (m, 3H), 7.08-7.03 (m, 1H), 4.18 (quin, J=6.1 Hz, 1H), 3.79 (s, 2H), 3.59 (d, J=5.8 Hz, 2H), 2.94-2.88 (m, 4H), 2.79-2.68 (m, 5H). LCMS (m/z): 376.0 (M+1).

Compound 219 (R)—N-(3-(3,4-dihydroisoquinolin-2(1H)-yl)-2-hydroxypropyl)-2-methylquinoline-6-carboxamide

To a solution of 2-methylquinoline-6-carboxylic acid (200 mg, 1.070 mmol) in DCM (30 mL), was added HATU (489 mg, 1.283 mmol) and TEA (324 mg, 3.208 mmol). The solution was stirred at 15° C. for 30 minutes before (R)—1-amino-3-(3,4-dihydro isoquinolin-2(1H)-yl)propan-2-ol (264 mg, 1.283 mmol) was added. The resulting solution was stirred for another 16 h at 15° C., until the reaction was complete by LCMS analysis. The mixture was then concentrated under vacuum to give the crude material which was purified by Preparative HPLC to give the title compound (118 mg, 29%). ¹H NMR (400 MHz, METHANOL-d₄) δ 8.33 (d, J=1.9 Hz, 1H), 8.15 (d, J=8.5 Hz, 1H), 8.09 (dd, J=2.1, 8.8 Hz, 1H), 7.93 (d, J=8.8 Hz, 1H), 7.49 (d, J=8.4 Hz, 1H), 7.15-7.05 (m, 4H), 4.18 (quin, J=6.1 Hz, 1H), 3.79 (s, 2H), 3.63-3.55 (m, 2H), 2.95-2.90 (m, 4H), 2.76 (s, 3H), 2.76-2.68 (m, 2H). LCMS (m/z): 376.1 [M+H]⁺

Compound 221 (S)—N-(3-(3,4-dihydroisoquinolin-2(1H)-yl)-2-hydroxypropyl)-2-methylquinoline-6-carboxamide

To a solution of 2-methylquinoline-6-carboxylic acid (1 g, 5.35 mmol) in DCM (100 mL), was added HATU (2.44 g, 6.42 mmol) and TEA (1620 mg, 16.043 mmol). The solution was stirred at 15° C. for 30 minutes before (S)-1-amino-3-(3,4-dihydro isoquinolin-2(1H)-yl)propan-2-ol (1.76 g, 8.55 mmol) was added. The resulting solution was stirred for 16 h at 15° C. until LCMS analysis showed the reaction to be complete. The mixture was then concentrated under vacuum and the residue purified by Preparative HPLC to give the desired title compound (502.1 mg, 25%). ¹H NMR (400 MHz, METHANOL-d₄) δ 8.31 (br. s., 1H), 8.08 (d, J=8.8 Hz, 1H), 8.12 (d, J=8.4 Hz, 1H), 7.91 (d, J=8.8 Hz, 1H), 7.47 (d, J=8.3 Hz, 1H), 7.17-7.03 (m, 4H), 4.23-4.11 (m, 1H), 3.78 (br. s., 2H), 3.59 (d, J=5.5 Hz, 2H), 2.91 (br. s., 4H), 2.78-2.69 (m, 5H). LCMS (m/z): 376.1 [M+H]⁺

Compound 208 (S)-6-((1-acetylpiperidin-4-yl)amino)-N-(3-(3,4-dihydroisoquinolin-2(1H)-yl)-2-hydroxypropyl)pyrimidine-4-carboxamide

Step 1: tert-butyl (1-acetylpiperidin-4-yl)carbamate

To a solution of tert-butyl piperidin-4-ylcarbamate (200 g, 1 mol) and Et₃N (150 g, 1.5 mol) in DCM (3000 mL) was added Ac₂O (102 g, 1 mol) dropwise over 1 h, while maintained the temperature at 0° C. After addition, the mixture was stirred 0° C. for another 2 h, at which time TLC showed the reaction was completed. The solution was quenched by addition of water (1 L). The organic phase was collected and washed with saturated aqueous NaHCO₃ (1 L), dried (Na₂SO₄) and concentrated to give crude product. Four batches were run in parallel and produced a combined crude product weight of 670 g. This crude was used directly in the step. LCMS (m/z): 243.1 (M+1).

Step 2: 1-(4-aminopiperidin-1-Yl)ethanone Hydrochloride

To a solution of tert-butyl (1-acetylpiperidin-4-yl)carbamate (330 g, 1.36 mol) in MeOH (1000 mL) was added HCl/MeOH (4M, 300 mL) over 30 min to maintain the temperature at 0° C. After addition, the mixture was stirred at 0° C. for another 2 h and then concentrated to give the crude product. Two batches were run in parallel and produced a combined crude product weight of 310 g. This crude was used in next step without further purification. ¹H NMR (400 MHz, D₂O) δ 4.35 (dd, J=2.0, 12.0 Hz, 1H), 3.98-3.85 (m, 1H), 3.44-3.30 (m, 1H), 3.18-3.05 (m, 1H), 2.75-2.58 (m, 1H), 2.06-1.92 (m, 5H), 1.61-1.31 (m, 2H); LCMS (m/z): 143.1 (M+1).

Step 3: 6-chloropyrimidine-4-carbonyl chloride

To a stirred mixture of 6-hydroxypyrimidine-4-carboxylic acid (300 g, 2.14 mol) in EA (3000 mL), oxalyl dichloride (1356 g, 10.68 mol) was dropped slowly to maintain a reaction temperature below 30° C. After addition, the mixture was stirred at 20° C. for 30 min and then 2 mL of DMF was added to the mixture. The mixture was then stirred at 80° C. for 16 hours and concentrated to give the crude product as black solid. Three batches were run in parallel and produced a combined crude product weight of 787 g. This crude was used directly in the next step.

Step 4: (S)-6-chloro-N-(3-(3,4-dihydroisoquinolin-2(1H)-yl)-2-hydroxypropyl)pyrimidine-4-carboxamide

To a stirred mixture of (S)-1-amino-3-(3,4-dihydroisoquinolin-2(1H)-yl)propan-2-ol (247 g, 1.20 mol), and TEA (250 g, 2.5 mol) in DCM (3500 mL) was added 6-chloropyrimidine-4-carbonyl chloride (190 g in 100 mL of DCM) slowly at −60° C. over 1 h. After addition, the mixture was then allowed to warm to 10° C. Stirring was continued for 1 h, at which time TLC showed the reaction was completed. The reaction was quenched by addition of water (1.5 L). The organic phase was collected, dried (Na₂SO₄) and evaporated. The residue was purified by flash chromatography (EtOAc˜DCM:MeOH=10:1) to give the desired product as a pale yellow solid. Four batches were run in parallel and produced a combined crude product weight of 800 g, 49% yield. ¹H NMR (400 MHz, MeOD-d4) δ 8.73 (d, J=1.0 Hz, 1H), 8.07 (d, J=1.0 Hz, 1H), 7.17-7.06 (m, 3H), 7.00 (d, J=7.0 Hz, 1H), 4.12 (q, J=6.0 Hz, 1H), 3.74 (s, 2H), 3.64-3.53 (m, 2H), 2.94 (q, J=5.5 Hz, 2H), 2.92-2.81 (m, 2H), 2.78-2.64 (m, 2H); LCMS (m/z): 347.2 [M+H]⁺

Step 5: (S)-6-((1-acetylpiperidin-4-yl)amino)-N-(3-(3,4-dihydroisoquinolin-2(1H)-yl)-2-hydroxypropyl)pyrimidine-4-carboxamide

The solution of (S)-6-chloro-N-(3-(3,4-dihydroisoquinolin-2(1H)-yl)-2-hydroxypropyl)pyrimi dine-4-carboxamide (190 g, 0.55 mmol) and 1-(4-aminopiperidin-1-yl)ethanone (78 g), Et₃N (100 g, 1 mol) in i-PrOH (2000 mL) was stirred at 60° C. for 16 h, at which time LCMS showed completed conversion. The mixture was concentrated and the residue was purified by flash chromatography to give the crude product. Four batches were run in parallel and produced a combined crude product weight of 482 g. This crude was further purified on preparative HPLC to give the title compound (325 g, >98% purity, free base form). ¹H NMR (400 MHz, MeOD-d4) 8.26 (s, 1H), 7.15-7.02 (m, 5H), 4.46 (m, 1H), 4.15-4.07 (m, 2H), 3.88 (m, 1H), 3.74 (s, 2H), 3.53 (m, 2H), 3.33 (m, 1H), 2.95-2.86 (m, 5H), 2.68 (m, 2H), 2.14-2.01 (m, 5H), 1.48-1.42 (m, 2H); LCMS (m/z): 453.3 [M+H]⁺

Step 6: (S)-6-((1-acetylpiperidin-4-yl)amino)-N-(3-(3,4-dihydroisoquinolin-2(1H)-yl)-2-hydroxypropyl)pyrimidine-4-carboxamide hydrochloride

The free base was dissolved in DCM (100 mL) and added dropwise to a stirred and cooled solution of HCl (6N in EtOAc, 1 L) at −30° C. Stirring at −30° C. was continued for another 1 h and the resulting precipitate was collected by filtration. The solid was washed with DCM and EtOAc, dried to give the HCl salt of the target compound (301.4 g, yield: 30.2%) as a white solid. ¹H NMR (400 MHz, D₂O) δ 8.59 (s, 1H), 7.30-7.17 (m, 3H), 7.17-7.07 (m, 2H), 4.55 (dd, J=6.4, 15.4 Hz, 1H), 4.43-4.19 (m, 4H), 3.88 (d, J=13.8 Hz, 1H), 3.82-3.72 (m, 1H), 3.52-3.33 (m, 4H), 3.31-3.08 (m, 4H), 2.86 (t, J=11.6 Hz, 1H), 2.11-1.94 (m, 5H), 1.67-1.40 (m, 2H); LCMS (m/z): 453.2 [M+H]⁺.

Compound 254

(S)-2-((1-acetylpiperidin-4-yl)amino)-N-(3-(3,4-dihydroisoquinolin-2(1H)-yl)-2-hydroxypropyl)isonicotinamide Step 1: methyl 2-((1-(tert-butoxycarbonyl)piperidin-4-yl)amino)isonicotinate

A mixture of methyl 2-bromoisonicotinate (160 g, 0.69 mol) and tert-butyl 4-amino piperidine-1-carboxylate (200 g, 1.0 mol), Pd₂(dba)₃ (8 g, 5% w), xantphos (8 g, 5% w), Cs₂CO₃ (326 g, 1.0 mol) in dioxane (2500 mL) was stirred at 80° C. under N₂ for 16 h. After completion of the reaction, the mixture was concentrated and the residue dissolved in water (800 mL) and extracted with DCM (1000 mL×3). The combined organic layers were dried and concentrated. The residue was purified by flash chromatography to give the product. Nine batches were run in parallel and produced a combined product weight of 700 g, Yield: 33.4%. ¹H NMR (400 MHz, CDCl₃) δ 8.19 (d, J=5.2 Hz, 1H), 7.08 (d, J=5.2 Hz, 1H), 6.96 (s, 1H), 4.62 (d, J=8.0 Hz, 1H), 4.05 (br. s., 2H), 3.92 (s, 3H), 2.97 (t, J=12.0 Hz, 2H), 2.11-1.97 (m, 2H), 1.48 (s, 9H), 1.42-1.35 (m, 2H). LCMS (m/z): 336.1 (M+1).

Step 2: 2-((1-(tert-butoxycarbonyl)piperidin-4-yl)amino)isonicotinic acid

To a solution of methyl 2-((1-(tert-butoxycarbonyl)piperidin-4-yl)amino)isonicotinate (230 g, 0.69 mol) in MeOH (1500 mL) was added aq.NaOH (56 g, in 200 mL of water) over 20 min at 0° C. After addition, the mixture was stirred at room temperature for 2 h. MeOH was then removed under reduced pressure and the aqueous solution then pH adjusted to pH=6 by acidifying with the addition of 4N HCl. The resulting precipitate was collected by filtration, washed with water and dried to give the crude product. Three batches were run in parallel and produced a combined crude product weight of 590 g, yield: 89.4%. This crude was used in next step without further purification. LCMS (m/z): 322.2 (M+1).

Step 3: (S)-tert-butyl 4-((4-((3-(3,4-dihydroisoquinolin-2(1H)-yl)-2-hydroxypropyl)carbamoyl)pyridin-2-yl)amino)piperidine-1-carboxylate

To a solution of 2-((1-(tert-butoxycarbonyl)piperidin-4-yl)amino)isonicotinic acid (150 g, 0.47 mol) in DCM (1500 mL) was added HATU (178 g, 0.47 mol) and TEA (47 g, 0.47 mol) at 20° C., then the mixture was stirred at the temperature for 2 h. (S)-1-amino-3-(3,4-dihydroisoquinolin-2(1H)-yl)propan-2-ol (113 g, 0.55 mol) was added to the solution, and the mixture was stirred at 20° C. for another 16 h, at which time TLC showed the completion of the reaction. The mixture washed with water (200 mL) and the combined organic phases were dried and concentrated. The residue was purified by flash chromatography (EtOAc˜DCM:MeOH=10:1) to give the title compound as yellowish oil. Four batches were run in parallel and produced a combined product weight of 510 g, yield: 53.2%. LCMS (m/z): 510.2 [M+H]⁺.

Step 4: (S)—N-(3-(3,4-dihydroisoquinolin-2(1H)-yl)-2-hydroxypropyl)-2-(piperidin-4-ylamino)isonicotinamide hydrochloride

The mixture of (S)-tert-butyl 4-((4-((3-(3,4-dihydroisoquinolin-2(1H)-yl)-2-hydroxypropyl) carbamoyl)pyridin-2-yl)amino)piperidine-1-carboxylate (510 g, 1.0 mol) in DCM (1000 mL) was dropped slowly into a stirred and cooled (−30° C.) solution of HCl (4M in EtOAc, 2000 mL). After addition, the mixture was stirred at −30° C. for 30 min. The resulting solid was then collected by filtration, washed with DCM and dried under reduced pressure to give the title compound (350 g yield: 85.4%, HCl salt) as a white solid. LCMS (m/z): 410.2 [M+H]⁺

Step 5: (S)-2-((1-acetylpiperidin-4-yl)amino)-N-(3-(3,4-dihydroisoquinolin-2(1H)-yl)-2-hydroxypropyl)isonicotinamide

To a stirred mixture of (S)—N-(3-(3,4-dihydroisoquinolin-2(1H)-yl)-2-hydroxypropyl)-2-(piperi din-4-ylamino)isonicotinamide (70 g), and Et₃N (40 g) in DCM (2000 mL) was added Ac₂O (17 g) dropwise over 1 h at 0° C. After addition, the mixture was warmed to 20° C. and stirring was continued for another 1 h, at which time TLC showed the reaction was completed. The reaction mixture was washed with water (500 mL), and the organic phase dried and concentrated. The residue was then purified by flash chromatography (EtOAc˜DCM:MeOH=10:1) to give crude product. Five batches were run in parallel and produced a combined crude product weight of 400 g. This crude was further purified by preparative HPLC to give the pure product (310 g, >98% purity, free base form). ¹H NMR (400 MHz, MeOD-d4) 7.94-7.92 (d, 7.0 Hz, 1H), 7.14-7.05 (m, 4H), 6.87 (s, 1H), 6.76-6.74 (m, 1H), 4.44 (m, 1H), 4.10 (m, 1H), 3.96-3.94 (m, 2H), 3.75 (s, 2H), 3.52 (m, 2H), 3.33-3.32 (m, 1H), 2.92-2.86 (m, 5H), 2.67 (m, 2H), 2.13-2.00 (m, 5H), 1.44-1.37 (m, 2H); LCMS (m/z): 452.3 [M+H]⁺

Step 6: (S)-2-((1-acetylpiperidin-4-yl)amino)-N-(3-(3,4-dihydroisoquinolin-2(1H)-yl)-2-hydroxypropyl)isonicotinamide hydrochloride

The free base was dissolved in DCM (100 mL) and added dropwise to a stirred and cooled solution of HCl (6N in EtOAc, 1 L) at −30° C. Stirring at −30° C. was continued for another 1 h and the resulting precipitate was collected by filtration. The solid was washed with DCM and EtOAc, dried to give the HCl salt of the product (302.2 g, yield: 78.0%) as a white solid. ¹H NMR (400 MHz, MeOD-d4) δ 8.00 (d, J=6.8 Hz, 1H), 7.64 (br. s., 1H), 7.36-7.18 (m, 5H), 4.70 (d, J=15.4 Hz, 1H), 4.60-4.39 (m, 3H), 4.19 (br. s., 1H), 4.11 (d, J=13.2 Hz, 1H), 3.98-3.85 (m, 1H), 3.63-3.47 (m, 5H), 3.43-3.25 (m, 3H), 3.25-3.11 (m, 2H), 2.33 (s, 3H), 2.22 (t, J=15.2 Hz, 2H), 1.85-1.61 (m, 2H); LCMS (m/z): 452.2 [M+H]⁺

Compound 284 (S)-6-((1-acetylazetidin-3-yl)amino)-N-(3-(3,4-dihydroisoquinolin-2(1H)-yl)-2-hydroxypropyl)pyrimidine-4-carboxamide

Step 1: tert-butyl (1-acetylazetidin-3-yl)carbamate

To a solution of tert-butyl azetidin-3-ylcarbamate (100 g, 0.58 mol) and Et₃N (88 g, 0.87 mol) in DCM (1500 mL) was added Ac₂O (59.6 g, 0.88 mol) dropwise at 0° C. The mixture was then stirred at 0° C. for 2 h, at which time TLC showed the completion of the reaction. The reaction was quenched by addition of water (1000 mL) and then stirred at 20° C. for 30 min. The organic phase was separated, dried (Na₂SO₄) and concentrated to give the crude product. Seven batches were run in parallel and produced a combined crude product weight of 530 g. This crude was used in next step without the further purification. LCMS (m/z): 215.1 (M+1).

Step 2: 1-(3-aminoazetidin-1-yl)ethanone

To a solution of tert-butyl (1-acetylazetidin-3-yl)carbamate (250 g) in MeOH (1000 mL) was slowly added HCl/MeOH (4M, 300 mL) at 0° C. After addition, the mixture was stirred at 0° C. for 6 h. The mixture was then concentrated under reduced pressure to give the crude product as a white solid. Two batches were run in parallel and produced a combined crude product weight of 186 g. This crude was used in next step without the further purification. ¹H NMR (400 MHz, DMSO-d₆) δ 4.58-4.49 (m, 1H), 4.35-4.19 (m, 2H), 4.19-4.08 (m, 1H), 3.97 (dd, J=4.2, 11.2 Hz, 1H), 1.83 (s, 3H); LCMS (m/z): 115.1 (M+1).

Step 3: 6-chloropyrimidine-4-carbonyl chloride

A stirred mixture of 6-hydroxypyrimidine-4-carboxylic acid (75 g, 0.54 mol) in EtOAc (300 mL) had oxalyl dichloride (226 g, 1.79 mol) dropped slowly to maintain the temperature below 30° C. After addition, the mixture was stirred at 20° C. for 30 min and then DMF (2 mL) was added to the mixture. The mixture was then stirred at 80° C. for 16 hours and concentrated to give the crude product as a black solid. Sixteen batches were run in parallel and produced a combined crude product weight of 1035 g. This crude was used directly in the next step.

Step 4: (S)-6-chloro-N-(3-(3,4-dihydroisoquinolin-2(1H)-yl)-2-hydroxypropyl)pyrimidine-4-carboxamide

To a stirred mixture of(S)-1-amino-3-(3,4-dihydroisoquinolin-2(1H)-yl)propan-2-ol (300 g, 1.46 mol), and TEA (300 g, 3 mol) in DCM (4 L) was added 6-chloropyrimidine-4-carbonyl chloride (250 g in 2 L of DCM) slowly at −60° C. over 1 h. After the additionwas complete, the mixture was then allowed to warm to 10° C. Stirring was continued for 1 h, at which time TLC showed the reaction was completed. The reaction was quenched by addition of water (2 L). The organic phase was collected, dried (Na₂SO₄) and evaporated. The residue was purified by flash chromatography (EtOAc˜DCM:MeOH=10:1) to give the desired product as a pale yellow solid. Four batches were run in parallel and produced a combined product weight of 970 g, yield: 49%. ¹H NMR (400 MHz, MeOD-d4) δ 8.73 (d, J=1.0 Hz, 1H), 8.07 (d, J=1.2 Hz, 1H), 7.17-7.06 (m, 3H), 7.00 (d, J=7.2 Hz, 1H), 5.51 (s, 1H), 4.12 (q, J=6.0 Hz, 1H), 3.74 (s, 2H), 3.64-3.53 (m, 2H), 2.94 (q, J=5.6 Hz, 2H), 2.92-2.81 (m, 2H), 2.78-2.64 (m, 2H); LCMS (m/z): 347.2 [M+H]⁺

Step 5: (s)-6-((1-acetylazetidin-3-yl)amino)-N-(3-(3,4-dihydroisoquinolin-2(1H)-yl)-2-hydroxypropyl)pyrimidine-4-carboxamide

To a solution of (S)-6-chloro-N-(3-(3,4-dihydroisoquinolin-2(1H)-yl)-2-hydroxypropyl) pyrimi dine-4-carboxamide (240 g, 0.69 mol) in i-PrOH (2.5 L) was added 1-(3-amino azetidin-1-yl)ethanone (120 g) and TEA (100 g). After addition, the solution was heated at 60° C. for 16 h, at which time LCMS showed completion of the reaction. The mixture was concentrated and the residue was purified by flash chromatography to give the crude product. Four batches were run in parallel and produced a combined crude product weight of 420 g, 90% purity. This crude was further purified on preparative HPLC to give the title compound (330 g, >98% purity, free base form). ¹H NMR (400 MHz, MeOD-d4) 8.27 (s, 1H), 7.12-6.98 (m, 5H), 4.71 (s, 1H), 4.54 (m, 1H), 4.32 (m, 1H), 4.06 (m, 2H), 3.88 (m, 1H), 3.70 (s, 2H), 3.53-3.50 (m, 2H), 2.91-2.83 (m, 4H), 2.65 (m, 2H), 1.88 (s, 3H); LCMS (m/z): 425.2 [M+H]⁺

Step 6: (s)-6-((1-acetylazetidin-3-yl)amino)-N-(3-(3,4-dihydroisoquinolin-2(1H)-yl)-2-hydroxypropyl)pyrimidine-4-carboxamide hydrochloride

The free base was dissolved in DCM (100 mL) and added dropwise to a stirred and cooled solution of HCl (6N in EtOAc, 1 L) at −30° C. Stirring at −30° C. was continued for another 1 h and the resulting precipitate was collected by filtration. The solid was washed with DCM and EtOAc, dried to give the HCl salt of the product (301 g, yield: 26%) as a white solid. ¹H NMR (400 MHz, D₂O) δ 8.65 (s, 1H), 7.30-7.19 (m, 4H), 7.13 (d, J=7.5 Hz, 1H), 4.95-4.85 (m, 1H), 4.63-4.50 (m, 2H), 4.41-4.28 (m, 3H), 4.22 (dd, J=4.8, 9.2 Hz, 1H), 3.97 (dd, J=4.6, 10.0 Hz, 1H), 3.77 (dt, J=5.6, 11.3 Hz, 1H), 3.53-3.35 (m, 4H), 3.34-3.26 (m, 1H), 3.22-3.04 (m, 2H), 1.87-1.79 (m, 3H); LCMS (m/z): 425.2 [M+H]⁺.

LC-MS Conditions Method A (LCMS-B (0-60AB_ELSD_2MIN))

Experiments performed on an Agilent 1200 HPLC (with a PDA detector and a ELSD detector) with Agilent 6100 MSD mass spectrometer using ESI as ionization source using an Xtimate™-C18 30*2.1 mm column and a 0.8 ml/minute flow rate. Acquire Time: 2 min, Wavelength: UV220, Oven Temp.: 50° C. The solvent system was a gradient starting with 100% water containing 0.038% TFA (solvent A) and 0% acetonitrile containing 0.02% TFA (solvent B), followed by a gradient up to 40% solvent A and 60% solvent B over the next 0.9 minutes. This was maintained for 0.6 minutes before returning to 100% solvent A over the next 0.5 minute. Total run time was 2 min.

Method B (LCMS-C(10-80_AB))

Experiments performed on an SHIMADZU 20A HPLC (with a PDA detector) with SHIMADZU 2010EV MSD mass spectrometer using ESI as ionization source using an Xtimate™-C18 30*2.1 mm column and a 1.2 ml/minute flow rate. The solvent system was a gradient starting with 90% water containing 0.038% TFA (solvent A) and 10% acetonitrile containing 0.02% TFA (solvent B), followed by a gradient up to 20% solvent A and 80% solvent B over the next 0.9 minutes. This was maintained for 0.6 minutes before returning to 90% solvent A and 10% solvent B over the next 0.5 minute. Total run time was 2 min.

Method C (LCMS-E(5-95AB_220&254 nm))

Experiments performed on an SHIMADZU 20A HPLC (with a PDA detector) with SHIMADZU 2010EV MSD mass spectrometer using ESI as ionization source using an Merk RP-18e 2*25 mm column and a 1.5 ml/minute flow rate. The solvent system was a gradient starting with 95% water containing 0.038% TFA (solvent A) and 5% acetonitrile containing 0.02% TFA (solvent B), followed by a gradient up to 5% solvent A and 95% solvent B over the next 0.7 minutes. This was maintained for 0.4 minutes before returning to 95% solvent A and 5% solvent B over the next 0.4 minute. Total run time was 1.5 min.

Method D (LCMS-A(0-30_AB))

Experiments performed on an SHIMADZU 20A HPLC (with a PDA detector) with SHIMADZU 2010EV MSD mass spectrometer using ESI as ionization source using an Xtimate™-C18 30*2.1 mm column and a 1.2 ml/minute flow rate. The solvent system was a gradient starting with 100% water containing 0.038% TFA (solvent A) and 0% acetonitrile containing 0.02% TFA (solvent B), followed by a gradient up to 70% solvent A and 30% solvent B over the next 0.9 minutes. This was maintained for 0.6 minutes before returning to 100% solvent A over the next 0.5 minute. Total run time was 2 min.

General HPLC Conditions (Acidic)

-   Mobile phase A: 4 L H₂O\1.5 ml TFA; Mobile phase B: 4 L ACN\0.75 ml     TFA -   Column: HPLC-D: Innovation C18 UPLC Column 2.1×30 mm, 2.6 um     -   HPLC-E: Xtimate C18 2.1*30 mm*3 um     -   HPLC-H: Innovation C18 UPLC Column 2.1×30 mm, 2.6 um -   Column temperature: 50 OC; Wavelength: 220 nm&254 nm&215 nm

General HPLC Conditions (Basic)

-   Mobile phase A: 4 L H₂O\2 ml NH₄OH; Mobile phase B: Acetonitrile -   Column: HPLC-B: XBridge C18 2.1*50 mm, 5 um     -   HPLC-C: Xbridge shield RP18 2.1*50 mm, 5 u -   Column temperature: 30 OC; Wavelength: 220 nm&254 nm&215 nm

General HPLC Conditions (Neutral)

-   Mobile phase A: H₂O; Mobile phase B: Acetonitrile -   Column: HPLC-B: XBridge C18 2.1*50 mm, 5 um     -   HPLC-C: Xbridge shield RP18 2.1*50 mm, 5 um -   Column temperature: 30° C.; Wavelength: 220 nm&254 nm&215 nm

Method A (0-30AB_6MIN)

-   Flow Rate: 0.8 ml/min -   Gradient: 0% B to 30% B in 4.2 min, holding 30% B for 1 min, 30% B     to 0% B in 0.01 min, holding 0% B for 1.09 min and then end.

Method B (0-60AB_6MIN)

-   Flow Rate: 0.8 ml/min -   Gradient: 0% B to 60% B in 4.2 min, holding 60% B for 1 min, 60% B     to 0% B in 0.01 min, holding 0% B for 1.09 min and then end.

Method C (10-80AB_6MIN)

-   Flow Rate: 0.8 ml/min -   Gradient: 10% B to 80% B in 4.2 min, holding 80% B for 1 min, 80% B     to 10% B in 0.01 min, holding 10% B for 1.09 min and then end.

Chiral HPLC Conditions: Method A (OJ-H):

-   Column: Chiralcel OJ-H 250×4.6 mm I.D., 5 um -   Mobile phase: A/B=90/10, A:Hexane with 0.1% DEA, B: Ethanol -   Flow rate: 0.5 mL/min -   Wavelength: 220 nm

Method B (OD-H):

-   Column: Chiralcel OD-H 250×4.6 mm I.D., 5 um -   Mobile phase: A/B=90/10, A: Hexane with 0.1% DEA, B: Ethanol -   Flow rate: 0.5 mL/min -   Wavelength: 220 nm

Method C (AD-H):

-   Column: Chiralpak AD-H 250×4.6 mm I.D., 5 um -   Mobile phase: A/B=90/10, A: Hexane with 0.1% DEA, B: Ethanol -   Flow rate: 0.5 mL/min -   Wavelength: 220 nm

Method D (AS-H):

-   Column: Chiralpak OJ-H 250×4.6 mm I.D., 5 um -   Mobile phase: A/B=90/10, A: Hexane with 0.1% DEA, B: Ethanol -   Flow rate: 0.5 mL/min -   Wavelength: 220 nm

Biological Assays PRMT5 Biochemical Assay

General Materials. S-adenosylmethionine (SAM), S-adenosylhomocysteine (SAH), bicine, KCl, Tween20, dimethylsulfoxide (DMSO), bovine skin gelatin (BSG), and Tris(2-carboxyethyl)phosphine hydrochloride solution (TCEP) were purchased from Sigma-Aldrich at the highest level of purity possible. ³H-SAM was purchase from American Radiolabeled Chemicals with a specific activity of 80 Ci/mmol. 384-well streptavidin Flashplates were purchased from PerkinElmer.

Substrates. Peptide representative of human histone H4 residues 1-15 was synthesized with a C-terminal linker-affinity tag motif and a C-terminal amide cap by 21^(st) Century Biochemicals. The peptide was high high-perfomance liquid chromatography (HPLC) purified to greater than 95% purity and confirmed by liquid chromatography mass spectrometry (LC-MS). The sequence was Ac-SGRGKGGKGLGKGGA[K-Biot]-amide (SEQ ID NO.:3).

Molecular Biology: Full-length human PRMT5 (NM_006109.3) transcript variant 1 clone was amplified from a fetal brain cDNA library, incorporating flanking 5′ sequence encoding a FLAG tag (MDYKDDDDK) (SEQ ID NO.:4) fused directly to Ala 2 of PRMT5. Full-length human MEP50 (NM_024102) clone was amplified from a human testis cDNA library incorporating a 5′ sequence encoding a 6-histidine tag (MHHHHHH) (SEQ ID NO.:5) fused directly to Arg 2 of MEP50. The amplified genes were sublconed into pENTR/D/TEV (Life Technologies) and subsequently transferred by Gateway™ attL×attR recombination to pDEST8 baculvirus expression vector (Life Technologies).

Protein Expression. Recombinant baculovirus and Baculovirus-Infected Insect Cells (BIIC) were generated according to Bac-to-Bac kit instructions (Life Technologies) and Wasilko, 2006, respectively. Protein over-expression was accomplished by infecting exponentially growing Spodopterafrugiperda (SF9) cell culture at 1.2×10⁶ cell/ml with a 5000 fold dilution of BIIC stock. Infections were carried out at 27° C. for 72 hours, harvested by centrifugation, and stored at −80° C. for purification.

Protein Purification. Expressed full-length human Flag-PRMT5/6His-MeP50 protein complex was purified from cell paste by NiNTA agarose affinity chromatography after a five hour equilibration of the resin with buffer containing 50 mM Tris-HCL, pH 8.0, 25 mM NaCl, and 1 mM TCEP at 4° C., to minimize the adsorption of tubulin impurity by the resin. Flag-PRMT5/6His-MeP50 was eluted with 300 mM Imidazole in the same buffer. The purity of recovered protein was 87%. Reference: Wasilko, D. J. and S. E. Lee: “TIPS: titerless infected-cells preservation and scale-up” Bioprocess J., 5 (2006), pp. 29-32.

Predicted Translations:

Flag-PRMT5 (SEQ ID NO.: 6) MDYKDDDDKA AMAVGGAGGS RVSSGRDLNC VPEIADTLGA VAKQGFDFLC MPVFHPRFKR EFIQEPAKNR PGPQTRSDLL LSGRDWNTLI VGKLSPWIRP DSKVEKIRRN SEAAMLQELN FGAYLGLPAF LLPLNQEDNT NLARVLTNHI HTGHHSSMFW MRVPLVAPED LRDDIIENAP TTHTEEYSGE EKTWMWWHNF RTLCDYSKRI AVALEIGADL PSNHVIDRWL GEPIKAAILP TSIFLTNKKG FPVLSKMHQR LIFRLLKLEV QFIITGTNHH SEKEFCSYLQ YLEYLSQNRP PPNAYELFAK GYEDYLQSPL QPLMDNLESQ TYEVFEKDPI KYSQYQQAIY KCLLDRVPEE EKDTNVQVLM VLGAGRGPLV NASLRAAKQA DRRIKLYAVE KNPNAVVTLE NWQFEEWGSQ VTVVSSDMRE WVAPEKADII VSELLGSFAD NELSPECLDG AQHFLKDDGV SIPGEYTSFL APISSSKLYN EVRACREKDR DPEAQFEMPY VVRLHNFHQL SAPQPCFTFS HPNRDPMIDN NRYCTLEFPV EVNTVLHGFA GYFETVLYQD ITLSIRPETH SPGMFSWFPI LFPIKQPITV REGQTICVRF WRCSNSKKVW YEWAVTAPVC SAIHNPTGRS YTIG L 6His-MEP50 (SEQ ID NO.: 7) MHHHHHHRKE TPPPLVPPAA REWNLPPNAP ACMERQLEAA RYRSDGALLL GASSLSGRCW AGSLWLFKDP CAAPNEGFCS AGVQTEAGVA DLTWVGERGI LVASDSGAVE LWELDENETL IVSKFCKYEH DDIVSTVSVL SSGTQAVSGS KDICIKVWDL AQQVVLSSYR AHAAQVTCVA ASPHKDSVFL SCSEDNRILL WDTRCPKPAS QIGCSAPGYL PTSLAWHPQQ SEVFVFGDEN GTVSLVDTKS TSCVLSSAVH SQCVTGLVFS PHSVPFLASL SEDCSLAVLD SSLSELFRSQ AHRDFVRDAT WSPLNHSLLT TVGWDHQVVH HVVPTEPLPA PGPASVTE

General Procedure for PRMT5/MEP50 Enzyme Assays on Peptide Substrates. The assays were all performed in a buffer consisting of 20 mM Bicine (pH=7.6), 1 mM TCEP, 0.005% BSG, and 0.002% Tween20, prepared on the day of use. Compounds in 100% DMSO (1 ul) were spotted into a polypropylene 384-well V-bottom plates (Greiner) using a Platemate Plus outfitted with a 384-channel head (Thermo Scientific). DMSO (1 ul) was added to Columns 11, 12, 23, 24, rows A-H for the maximum signal control and 1 ul of SAH, a known product and inhibitor of PRMT5/MEP50, was added to columns 11, 12, 23, 24, rows I-P for the minimum signal control. A cocktail (40 ul) containing the PRMT5/MEP50 enzyme and the peptide was added by Multidrop Combi (Thermo-Fisher). The compounds were allowed to incubate with PRMT5/MEP50 for 30 min at 25 degrees Celsius, then a cocktail (10 ul) containing ³H-SAM was added to initiate the reaction (final volume=51 ul). The final concentrations of the components were as follows: PRMT5/MEP50 was 4 nM, ³H-SAM was 75 nM, peptide was 40 nM, SAH in the minimum signal control wells was 100 uM, and the DMSO concentration was 1%. The assays were stopped by the addition of non-radioactive SAM (10 ul) to a final concentration of 600 uM, which dilutes the ³H-SAM to a level where its incorporation into the peptide substrate is no longer detectable. 50 ul of the reaction in the 384-well polypropylene plate was then transferred to a 384-well Flashplate and the biotinylated peptides were allowed to bind to the streptavidin surface for at least 1 hour before being washed three times with 0.1% Tween20 in a Biotek ELx405 plate washer. The plates were then read in a PerkinElmer TopCount plate reader to measure the quantity of ³H-labeled peptide bound to the Flashplate surface, measured as disintegrations per minute (dpm) or alternatively, referred to as counts per minute (cpm).

%  inhibition  calculation ${\% \mspace{14mu} {inh}} = {100 - {\left( \frac{{dpm}_{cmpd} - {dpm}_{\min}}{{dpm}_{\max} - {dpm}_{\min}} \right) \times 100}}$

Where dpm=disintegrations per minute, cmpd=signal in assay well, and min and max are the respective minimum and maximum signal controls.

Four-parameter  IC50  fit $Y = {{Bottom} + \frac{\left( {{Top} - {Bottom}} \right)}{\left( {1 + \left( \frac{X}{{IC}_{50}} \right)^{HillCoefficient}} \right.}}$

Where top and bottom are the normally allowed to float, but may be fixed at 100 or 0 respectively in a 3-parameter fit. The Hill Coefficient normally allowed to float but may also be fixed at 1 in a 3-parameter fit. Y is the % inhibition and X is the compound concentration.

Z-138 Methylation Assay

Z-138 suspension cells were purchased from ATCC (American Type Culture Collection, Manassas, Va.). RPMI/Glutamax medium, penicillin-streptomycin, heat inactivated fetal bovine serum, and D-PBS were purchased from Life Technologies, Grand Island, N.Y., USA. Odyssey blocking buffer, 800CW goat anti-rabbit IgG (H+L) antibody, and Licor Odyssey infrared scanner were purchased from Licor Biosciences, Lincoln, Nebr., USA. Symmetric di-methyl arginine antibody was purchased from EMD Millipore, Billerica, Mass., USA. 16% Paraformaldehyde was purchased from Electron Microscopy Sciences, Hatfield, Pa., USA.

Z-138 suspension cells were maintained in growth medium (RPMI 1640 supplemented with 10% v/v heat inactivated fetal bovine serum and 100 units/mL penicillin-streptomycin) and cultured at 37° C. under 5% CO₂.

Cell Treatment, In Cell Western (ICW) for detection of Symmetric di-Methyl Arginine and DNA content. Z-138 cells were seeded in assay medium at a concentration of 50,000 cells per mL to a 384-well cell culture plate with 50 μL per well. Compound (100 nL) from 384 well source plates was added directly to 384 well cell plate. Plates were incubated at 37° C., 5% CO₂ for 96 hours. After four days of incubation, 40 μL of cells from incubated plates were added to poly-D-lysine coated 384 well culture plates (BD Biosciences 356697). Plates were incubated at room temperature for 30 minutes then incubated at 37° C., 5% CO₂ for 5 hours. After the incubation, 40 μL per well of 8% paraformaldehyde in PBS (16% paraformaldahyde was diluted to 8% in PBS) was added to each plate and incubated for 30 minutes. Plates were transferred to a Biotek 405 plate washer and washed 5 times with 100 μL per well of wash buffer (TX PBS with 0.1% Triton X-100 (v/v)). Next 30 μL per well of Odyssey blocking buffer were added to each plate and incubated 1 hour at room temperature. Blocking buffer was removed and 20 μL per well of primary antibody was added (symmetric di-methyl arginine diluted 1:100 in Odyssey buffer with 0.1% Tween 20 (v/v)) and plates were incubated overnight (16 hours) at 4° C. Plates were washed 5 times with 100 μL per well of wash buffer. Next 20 μL per well of secondary antibody was added (1:200 800CW goat anti-rabbit IgG (H+L) antibody, 1:1000 DRAQ5 (Biostatus limited) in Odyssey buffer with 0.1% Tween 20 (v/v)) and incubated for 1 hour at room temperature. The plates were washed 5 times with 100 μL per well wash buffer then 1 time with 100 μL per well of water. Plates were allowed to dry at room temperature then imaged on the Licor Odyssey machine which measures integrated intensity at 700 nm and 800 nm wavelengths. Both 700 and 800 channels were scanned.

Calculations: First, the ratio for each well was determined by:

$\left( \frac{\text{symmetric~~di-methyl~~Arginine~~800~~nm~~value}}{{DRAQ}\; 5\mspace{11mu} 700\mspace{14mu} {nm}\mspace{11mu} {value}} \right)$

Each plate included fourteen control wells of DMSO only treatment (minimum inhibition) as well as fourteen control wells for maximum inhibition treated with 3 μM of a reference compound (Background wells). The average of the ratio values for each control type was calculated and used to determine the percent inhibition for each test well in the plate. Reference compound was serially diluted three-fold in DMSO for a total of nine test concentrations, beginning at 3 μM. Percent inhibition was determined and IC₅₀ curves were generated using triplicate wells per concentration of compound.

${{Percent}\mspace{14mu} {Inhibition}} = {100 - \left( {\left( \frac{\left( \text{Individual~~Test~~Sample~~Ratio} \right) - \left( \text{Background~~Avg~~Ratio)} \right.}{\left( \text{Minimum~~Inhibition~~Ratio} \right) - \left( \text{Background~~Average~~Ratio} \right)} \right)* 100} \right)}$

Z-138 Proliferation Assay

Z-138 suspension cells were purchased from ATCC (American Type Culture Collection, Manassas, Va.). RPMI/Glutamax medium, penicillin-streptomycin, heat inactivated fetal bovine serum were purchased from Life Technologies, Grand Island, N.Y., USA. V-bottom polypropylene 384-well plates were purchased from Greiner Bio-One, Monroe, N.C., USA. Cell culture 384-well white opaque plates were purchased from Perkin Elmer, Waltham, Mass., USA. Cell-Titer Glo® was purchased from Promega Corporation, Madison, Wis., USA. SpectraMax M5 plate reader was purchased from Molecular Devices LLC, Sunnyvale, Calif., USA.

Z-138 suspension cells were maintained in growth medium (RPMI 1640 supplemented with 10% v/v heat inactivated fetal bovine serum and cultured at 37° C. under 5% CO₂. Under assay conditions, cells were incubated in assay medium (RPMI 1640 supplemented with 10% v/v heat inactivated fetal bovine serum and 100 units/mL penicillin-streptomycin) at 37° C. under 5% CO₂.

For the assessment of the effect of compounds on the proliferation of the Z-138 cell line, exponentially growing cells were plated in 384-well white opaque plates at a density of 10,000 cells/ml in a final volume of 50 μl of assay medium. A compound source plate was prepared by performing triplicate nine-point 3-fold serial dilutions in DMSO, beginning at 10 mM (final top concentration of compound in the assay was 20 μM and the DMSO was 0.2%). A 100 nL aliquot from the compound stock plate was added to its respective well in the cell plate. The 100% inhibition control consisted of cells treated with 200 nM final concentration of staurosporine and the 0% inhibition control consisted of DMSO treated cells. After addition of compounds, assay plates were incubated for 5 days at 37° C., 5% CO₂, relative humidity >90%.

Cell viability was measured by quantitation of ATP present in the cell cultures, adding 35 μl of Cell Titer Glo® reagent to the cell plates. Luminescence was read in the SpectraMax M5 microplate reader. The concentration of compound inhibiting cell viability by 50% was determined using a 4-parametric fit of the normalized dose response curves.

Results for certain compounds described herein are shown in Table 2.

TABLE 2 Biological Assay Results Cmpd No Biochemical IC₅₀ ICW EC₅₀ Proliferation EC₅₀ 1 A A C 2 A A C 3 A A C 4 C — — 5 B B ** 6 C — — 7 C — — 8 A A C 9 A A C 10 A B C 11 A C — 12 B C ** 13 A A B 14 A B C 15 A B D 16 A A B 17 B B ** 18 B B D 19 A B D 20 A A B 21 B B ** 22 B B ** 23 B B ** 24 A B C 25 B C ** 26 B B D 27 C — — 28 A B D 29 A B C 30 A B C 31 B B D 32 B B ** 33 C — — 34 A B D 35 A B D 36 A B D 37 A B ** 38 A B D 39 B C ** 40 A A C 41 A A C 42 B C ** 43 B B C 44 A — B 45 A B — 46 C — — 47 B B — 48 B B — 49 B — — 50 B — — 51 B — — 52 B — — 53 B — — 54 A — — 55 A — — 56 B — — 57 B — — 58 A — — 59 A A B 60 B B C 61 B B — 62 A B D 63 A A B 64 A B C 65 A A C 66 A B C 67 B B D 68 A A C 69 B C ** 71 B B C 72 B C — 73 A A C 74 A A B 75 B B — 76 B B — 77 A B C 78 A A B 79 A A B 80 A A B 81 A B C 82 A A B 83 B B — 84 A A C 85 B B D 86 B C — 87 C — — 88 B B ** 89 B B ** 90 A B D 91 A A C 92 A A C 93 B C ** 94 A B D 95 B B C 96 A A C 97 A A C 98 A B C 99 A A C 100 A A C 101 A A D 102 A A C 103 A A D 104 A A C 105 A A C 106 A A B 107 A A B 108 A A B 109 A A B 110 A A C 111 A B C 112 B C ** 113 A B D 114 A B D 115 A B ** 116 B B ** 117 B B ** 118 A B ** 119 A B C 120 A B C 121 A A B 122 A A B 123 A B C 124 A A A 125 A A B 126 A A C 127 A A C 128 A A C 129 A A C 130 A B D 131 A B C 132 A B C 133 A A C 134 A B D 135 A A D 136 A A C 137 A A C 138 A B D 139 A A C 140 A A C 141 A A C 142 A A C 143 A A C 144 A A C 145 A A C 146 A A C 147 A B D 148 B C ** 149 B C ** 150 B B ** 151 B B ** 152 A A B 153 A A B 154 A B C 155 B C ** 156 A B C 157 B C ** 158 A — ** 159 A B C 160 A B D 161 A A C 162 A A C 163 A A C 164 A A C 165 A B C 166 A A B 167 A A B 168 A A B 169 A B C 170 B B ** 171 A B C 172 A A C 173 A A C 174 A A C 175 A B C 176 A A C 177 A A C 178 A A C 179 A A C 180 A B D 181 A B C 182 A A C 183 A A C 184 A A C 185 A B C 186 A A C 187 A A B 188 A A A 189 A A B 190 A A B 191 A A B 192 A A B 193 A A B 194 A B C 195 A B D 196 A A C 197 A A B 198 A A B 199 A A C 200 A B D 201 A B C 202 A A C 203 A A B 204 A A B 205 A A B 206 A B C 207 A A B 208 A A A 209 A A D 210 A A B 211 A A A 212 A A B 213 A A B 214 A A C 215 A A A 216 A A B 217 A A B 218 A B D 219 A B D 220 A A B 221 A A B 222 A B ** 223 A A C 224 A A B 225 A A A 226 A A B 227 A A B 228 A A B 229 A A C 230 A A B 231 A A C 232 B B C 233 A B C 234 A A C 235 A B ** 236 A B C 237 A A C 238 A B D 239 A A C 240 B B ** 241 A B C 242 A B C 243 A B C 244 A B C 245 A B D 246 A B C 247 A B C 248 A B C 249 A B D 250 A A C 251 A A C 252 A B C 253 A B C 254 A A A 255 A A C 256 A A C 257 A A C 258 A B D 259 A B ** 260 A B ** 261 A A C 262 A A B 263 A A C 264 A A C 265 A B C 266 A A B 267 A A B 268 A A B 269 A A C 270 C — — 271 A B C 272 A A C 273 A B C 274 A B C 275 B B C 276 A B C 277 A A C 278 A A B 279 A A A 280 A A B 281 A B D 282 A A C 283 A A B 284 A A A 285 B B C 286 A A C 287 A A B 288 A A A 289 A A B 290 A B D 291 A A C 292 A A B 293 A A A 294 B B C 295 A A C 296 A A B 297 A A A 298 A A B 299 A B D 300 A A C 301 A A B 302 A A A 303 B B C 304 A A C 305 A A B 306 A A A 307 A A B 308 A B D 309 A A C 310 A A B 311 A A A 312 B B C 313 A A C 314 A A D 315 A A B 316 A A C 317 A A B 318 A B C 319 A A C 320 A B C 321 A A B 322 A A B 323 A A B 324 A A B 325 A A B 326 A A B 327 B B ** 328 C F ** 329 A A B 330 A A A 331 A A A 332 A A A 333 A A B 334 A A A 335 A A A 336 B B D 337 A A B 338 C — — 340 B B ** 341 A F ** 342 A A C 343 A A A 344 B F C 345 A A B 346 A A B 347 A A B 348 A A B 349 A A A 350 A A B 351 A A B 352 B A C 353 A B D 354 A A C 355 A A A 356 B F ** 357 B A C 358 C B ** 359 A B C 360 B A C 361 B A C 362 B A B 363 A A C 364 B B C 365 A A B 366 B B ** 367 B B D 368 A A C 369 A A C 370 A A C 371 A A C 372 A A B 373 A A C 374 A A C 375 A A B 376 A A C 377 A B C 378 A F ** 379 A A C 380 A A B 381 A A C 382 A A B 383 A A C 384 A A C 385 A A C 386 A A C 387 A A B 388 A A C 389 A A C 390 A A C 391 A A C 392 A A C 393 A A A 394 A A A 395 A A A 396 A A C 397 A A A 398 A A A 399 A A C 400 A F ** 401 A B C 402 A A C 403 A F ** 404 A B D 405 A A B 406 A A A 407 A A A 408 A A A 409 A A A 410 A A A 411 A A B 412 — A B 413 A A A 414 A A A 415 A A A 416 A A A 417 A A A 418 A A A 419 A A A 420 A A C 421 A A C 422 A A C 423 A B D 424 A A B 425 A A A 429 B B D 430 A B C 431 A A C 432 A A C 433 A A C 434 A A B 435 A A B 436 A A C 437 A A C 438 A B C 439 A B D 440 A A B 441 A A A 442 A A B 443 A A A 444 A A B 445 A A C 446 A A C 447 A A C 448 A F ** 449 A A B 450 A A B 451 A A B 452 A A B 453 A F ** 454 A — A 455 A — A 456 A B B 457 A A A 458 A A A 459 A A A 460 A A A 461 A A A 462 A A A 463 A A A 464 A A A 465 A A B 466 A B C 467 A B B 468 A A A 469 A A A 470 A A A 471 A A A 472 A A A 473 B F ** 474 A A B 475 A A B 476 A A B 477 A A A 478 A A A 479 A A — 480 A A B 481 A B C 482 A B C 483 A A C 484 A A C 485 A B C 486 A B C 487 A B C 488 A A A 489 A A A 490 A A A 491 A A B 492 A A C 493 C F — 494 A A B 495 A A B 496 A A A 497 A A A 498 A A A 499 A A B 500 A B D 501 A B C 502 A B C 503 A A A 504 A A A 505 A A B 506 A A B 507 A A B 509 A A A 511 A A A 513 A A B 515 A A B 517 A A B 519 A A B 521 A A B 522 A A C 523 C F G 524 B B G 525 A A B 526 A A B 527 A A B 528 A B B 529 A B B 530 A A A 531 A A B 532 A A B 533 A A A 534 B F G 535 B B G 536 A A B 538 C F G 540 C F G 542 B B G 544 A A B 545 A A C 546 A A A 547 A A A 548 B F G 549 A B G 550 A A C 551 A A A 552 A A B 553 A B G 554 A A B 555 A B C 556 A A B 557 A A A 558 A A B 559 A A B 560 A A B 561 A A B 562 A A B 563 A A B 564 A A B 565 A A B 566 A A A 567 A A B 568 A B C 569 A A B 570 A A C 571 A A C 572 A A B 573 B B G 574 A A A 575 A A G 576 A A C 577 A A A 578 A A A 579 A A B 580 A B G 581 A B G 582 A A C 583 A A C 584 A A C 585 A A B 586 A A A 587 A A A 588 C F G 589 A B C 590 A A B 591 A A C 592 A A B 593 A A B 594 A A B 595 A A G 596 A A C 597 A A B 598 A A C 599 A A C 600 A A C 601 A A B 602 A A B 603 B F C 604 A B C 605 B B G 606 B B G 607 C F G 608 B F G 609 B F G 610 A A A 611 A A A 612 A A A 613 A A B 614 A A A 615 A A A 616 A A A 617 B F G 618 A A C 619 A B D 620 A B D 621 A C C 622 A C C 623 A — D 624 A A A 625 B — G 626 B B C 627 A A A 628 A A A 629 A B C 630 A B G 631 A B G 632 A A B 634 B F G 635 A A A 636 A A A 637 A A B 638 A A A 639 A A C 640 A A B 641 A A C 642 A A B 646 B B ** 647 C F G 648 C F G 649 A A C 650 A A C 651 B F G 652 A B G 653 A A C 654 A A C 655 B B G 656 B B G 657 A A G 658 A A B 659 A A B 660 A A B 661 A A B 662 A A B 663 A A B 664 A A B 665 A A A 666 B B G 667 B A C 668 A A C 669 A A B 670 A A B 671 A A A 672 A A A 673 A A C 674 A A C 675 A A B 676 A A C 677 A A C 678 A A B 679 A A B 680 * F 681 B B G 682 A A B 683 B B G 684 A A B 685 A A B 686 A F G 687 A A B 688 A A B 689 A B G 690 B B G 691 A A C 692 B B G 693 A A B 694 A A B 695 * F — 696 C B — 697 C F — 698 A A C 699 B — — 700 — — — 701 B — — For Table 2, “A” indicates an IC₅₀ or EC₅₀ <0.100 μM, “B” indicates an IC₅₀ or EC₅₀ of 0.101-1.000 μM, “C” indicates an IC₅₀ or EC₅₀ of 1.001-10.000 μM, “D” indicates an IC₅₀ or EC₅₀ of 10.001-50 μM, and “E” indicates an IC₅₀ or EC₅₀ > 50 μM, “—” indicates no data, “F” indicates an IC₅₀ or EC₅₀ > 1 μM, “G” indicates an IC₅₀ or EC₅₀ > 5 μM, “*” indicates an IC₅₀ or EC₅₀ > 10 μM, “**” indicates an IC₅₀ or EC₅₀ > 20 μM.

OTHER EMBODIMENTS

The foregoing has been a description of certain non-limiting embodiments of the invention. Those of ordinary skill in the art will appreciate that various changes and modifications to this description may be made without departing from the spirit or scope of the present invention, as defined in the following claims. 

What is claimed is: 1.-110. (canceled)
 111. A method of inhibiting PRMT5, altering gene expression, or altering transcription, the method comprising contacting a cell with an effective amount of a compound of Formula (A):

or a pharmaceutically acceptable salt thereof, wherein:

represents a single or double bond; R¹² is hydrogen, halogen, or optionally substituted C₁₋₃alkyl; R¹³ is hydrogen, halogen, optionally substituted C₁₋₃alkyl, —NR^(A1)R^(A2), or —OR¹; R^(A1) and R^(A2) are each independently hydrogen, optionally substituted C₁₋₃ alkyl, optionally substituted acyl, or a nitrogen protecting group, or R^(A1) and R^(A2) are taken together with the intervening nitrogen atom to form an optionally substituted 3-6 membered heterocyclic ring; R¹ is hydrogen, R^(z), or —C(O)R^(z), wherein R^(z) is optionally substituted C₁₋₆ alkyl; L is —N(R)C(O)—, —C(O)N(R)—, —N(R)C(O)O—, or —OC(O)N(R)—; each R is independently hydrogen or optionally substituted C₁₋₆ aliphatic; Ar is a monocyclic or bicyclic aromatic ring having 0-4 heteroatoms independently selected from nitrogen, oxygen, and sulfur, wherein Ar is substituted with 0, 1, 2, 3, 4, or 5 R^(y) groups, as valency permits; or Ar is a monocyclic or bicyclic heterocyclic ring having 1-4 heteroatoms independently selected from nitrogen, oxygen, and sulfur, wherein Ar is substituted with 0, 1, 2, 3, 4, or 5 R^(y) groups, as valency permits; each R^(y) is independently selected from the group consisting of halo, —CN, —NO₂, optionally substituted aliphatic, optionally substituted carbocyclyl, optionally substituted aryl, optionally substituted heterocyclyl, optionally substituted heteroaryl, —OR^(A), —N(R^(B))₂, —SR^(A), —C(═O)R^(A), —C(O)OR^(A), —C(O)SR^(A), —C(O)N(R^(B))₂, —C(O)N(R^(B))N(R^(B))₂, —OC(O)R^(A), —OC(O)N(R^(B))₂, —NR^(B)C(O)R^(A), —NR^(B)C(O)N(R^(B))₂, —NR^(B)C(O)N(R^(B))N(R^(B))₂, —NR^(B)C(O)OR^(A), —SC(O)R^(A), —C(═NR^(B))R^(A), —C(═NNR^(B))R^(A), —C(═NOR^(A))R^(A), —C(═NR^(B))N(R^(B))₂, —NR^(B)C(═NR^(B))R^(B), —C(═S)R^(A), —C(═S)N(R^(B))₂, —NR^(B)C(═S)R^(A), —S(O)R^(A), —OS(O)₂R^(A), —SO₂R^(A), —NR^(B)SO₂R^(A), and —SO₂N(R^(B))₂; each R^(A) is independently selected from the group consisting of hydrogen, optionally substituted aliphatic, optionally substituted carbocyclyl, optionally substituted heterocyclyl, optionally substituted aryl, and optionally substituted heteroaryl; each R^(B) is independently selected from the group consisting of hydrogen, optionally substituted aliphatic, optionally substituted carbocyclyl, optionally substituted heterocyclyl, optionally substituted aryl, and optionally substituted heteroaryl, or two R^(B) groups are taken together with their intervening atoms to form an optionally substituted heterocyclic ring: R⁵, R⁶, R⁷, and R⁸ are independently hydrogen, halo, or optionally substituted aliphatic; each R^(x) is independently selected from the group consisting of halo, —CN, optionally substituted aliphatic, and —N(R″)₂; each R″ is independently hydrogen or optionally substituted aliphatic, or two R″ are taken together with their intervening atoms to form a heterocyclic ring; and n is 0, 1, 2, 3, 4, 5, 6, 7, 8, 9, or 10, as valency permits: provided the compound is not:

112.-115. (canceled)
 116. A method of treating or preventing a PRMT5-mediated disorder, comprising administering to a subject in need thereof a therapeutically effective amount of a compound of Formula (A):

or a pharmaceutically acceptable salt thereof; wherein:

represents a single or double bond; R¹² is hydrogen, halogen, or optionally substituted C₁₋₃alkyl; R¹³ is hydrogen, halogen, optionally substituted C₁₋₃alkyl, —NR^(A1)R², or —OR¹; R^(A1) and R^(A2) are each independently hydrogen, optionally substituted C₁₋₃ alkyl, optionally substituted acyl, or a nitrogen protecting group, or R^(A1) and R^(A2) are taken together with the intervening nitrogen atom to form an optionally substituted 3-6 membered heterocyclic ring; R¹ is hydrogen, R^(z), or —C(O)R^(z), wherein R^(z) is optionally substituted C₁₋₆ alkyl; L is —N(R)C(O)—, —C(O)N(R)—, —N(R)C(O)O—, or —OC(O)N(R)—; each R is independently hydrogen or optionally substituted C₁₋₆ aliphatic; Ar is a monocyclic or bicyclic aromatic ring having 0-4 heteroatoms independently selected from nitrogen, oxygen, and sulfur, wherein Ar is substituted with 0, 1, 2, 3, 4, or 5 R^(y) groups, as valency permits; or Ar is a monocyclic or bicyclic heterocyclic ring having 1-4 heteroatoms independently selected from nitrogen, oxygen, and sulfur, wherein Ar is substituted with 0, 1, 2, 3, 4, or 5 R^(y) groups, as valency permits; each R^(y) is independently selected from the group consisting of halo, —CN, —NO₂, optionally substituted aliphatic, optionally substituted carbocyclyl, optionally substituted aryl, optionally substituted heterocyclyl, optionally substituted heteroaryl, —OR^(A), —N(R^(B))₂, —SR^(A), —C(═O)R^(A), —C(O)OR^(A), —C(O)SR^(A), —C(O)N(R^(B))₂, —C(O)N(R^(B))N(R^(B))₂, —OC(O)R^(A), —OC(O)N(R^(B))₂, —NR^(B)C(O)R^(A), —NR^(B)C(O)N(R^(B))₂, —NR^(B)C(O)N(R^(B))N(R^(B))₂, —NR^(B)C(O)OR^(A), —SC(O)R^(A), —C(═NR^(B))R^(A), —C(═NNR^(B))R^(A), —C(═NOR^(A))R^(A), —C(═NR^(B))N(R^(B))₂, —NR^(B)C(═NR^(B))R^(B), —C(═S)R^(A), —C(═S)N(R^(B))₂, —NR^(B)C(═S)R^(A), —S(O)R^(A), —OS(O)₂R^(A), —SO₂R^(A), —NR^(B)SO₂R^(A), and —SO₂N(R^(B))₂; each R^(A) is independently selected from the group consisting of hydrogen, optionally substituted aliphatic, optionally substituted carbocyclyl, optionally substituted heterocyclyl, optionally substituted aryl, and optionally substituted heteroaryl; each R^(B) is independently selected from the group consisting of hydrogen, optionally substituted aliphatic, optionally substituted carbocyclyl, optionally substituted heterocyclyl, optionally substituted aryl, and optionally substituted heteroaryl, or two R^(B) groups are taken together with their intervening atoms to form an optionally substituted heterocyclic ring; R⁵, R⁶, R⁷, and R⁸ are independently hydrogen, halo, or optionally substituted aliphatic; each R^(x) is independently selected from the group consisting of halo, —CN, optionally substituted aliphatic, and —N(R″)₂; each R″ is independently hydrogen or optionally substituted aliphatic, or two R″ are taken together with their intervening atoms to form a heterocyclic ring; and n is 0, 1, 2, 3, 4, 5, 6, 7, 8, 9, or 10, as valency permits; provided the compound is not:


117. The method of claim 116, wherein the disorder is a proliferative disorder, a metabolic disorder, or a blood disorder.
 118. The method of claim 117, wherein the disorder is cancer.
 119. The method of claim 118, wherein the cancer is hematopoietic cancer, lung cancer, prostate cancer, melanoma, or pancreatic cancer.
 120. (canceled)
 121. The method of claim 117, wherein the metabolic disorder is diabetes or obesity.
 122. (canceled)
 123. (canceled)
 124. The method of claim 117, wherein the disorder is a hemoglobinopathy.
 125. The method of claim 124, wherein the disorder is sickle cell anemia or β-thalessemia.
 126. (canceled)
 127. The method of claim 116, wherein L is —C(O)N(R)—.
 128. The method of claim 116, wherein R¹³ is —OR¹, and R¹ is hydrogen.
 129. The method of claim 116, wherein Ar is phenyl or heteroaryl.
 130. The method of claim 129, wherein Ar is a 6-membered heteroaryl having 1-3 nitrogens.
 131. The method of claim 130, wherein Ar is pyridyl, pyridazinyl, pyrimidinyl, pyrazinyl, or triazinyl.
 132. The method of claim 116, wherein Ar is substituted with 1 or 2 R^(y) groups.
 133. The method of claim 116, wherein the compound is selected from the group consisting of:

and pharmaceutically acceptable salts thereof.
 134. The method of claim 116, wherein the compound is selected from the group consisting of:

and pharmaceutically acceptable salts thereof.
 135. The method of claim 116, wherein the compound is of Formula (A-7):

or a pharmaceutically acceptable salt thereof.
 136. The method of claim 116, wherein the compound is of the formula:

or a pharmaceutically acceptable salt thereof.
 137. The method of claim 116, wherein the compound is of the formula:

or a pharmaceutically acceptable salt thereof.
 138. A method of treating cancer, comprising administering to a subject in need thereof a therapeutically effective amount of a compound of Formula (A):

or a pharmaceutically acceptable salt thereof; wherein:

represents a single or double bond; R¹² is hydrogen, halogen, or optionally substituted C₁₋₃alkyl; R¹³ is hydrogen, halogen, optionally substituted C₁₋₃alkyl, —NR^(A1)R^(A2), or —OR¹; R^(A1) and R^(A2) are each independently hydrogen, optionally substituted C₁₋₃ alkyl, optionally substituted acyl, or a nitrogen protecting group, or R^(A1) and R^(A2) are taken together with the intervening nitrogen atom to form an optionally substituted 3-6 membered heterocyclic ring; R¹ is hydrogen, R^(z), or —C(O)R^(z), wherein R^(z) is optionally substituted C₁₋₆ alkyl; L is —N(R)C(O)—, —C(O)N(R)—, —N(R)C(O)O—, or —OC(O)N(R)—; each R is independently hydrogen or optionally substituted C₁₋₆ aliphatic; Ar is a monocyclic or bicyclic aromatic ring having 0-4 heteroatoms independently selected from nitrogen, oxygen, and sulfur, wherein Ar is substituted with 0, 1, 2, 3, 4, or 5 R^(y) groups, as valency permits; or Ar is a monocyclic or bicyclic heterocyclic ring having 1-4 heteroatoms independently selected from nitrogen, oxygen, and sulfur, wherein Ar is substituted with 0, 1, 2, 3, 4, or 5 R^(y) groups, as valency permits; each R^(y) is independently selected from the group consisting of halo, —CN, —NO₂, optionally substituted aliphatic, optionally substituted carbocyclyl, optionally substituted aryl, optionally substituted heterocyclyl, optionally substituted heteroaryl, —OR^(A), —N(R^(B))₂, —SR^(A), —C(═O)R^(A), —C(O)OR^(A), —C(O)SR^(A), —C(O)N(R^(B))₂, —C(O)N(R^(B))N(R^(B))₂, —OC(O)R^(A), —OC(O)N(R^(B))₂, —NR^(B)C(O)R^(A), —NR^(B)C(O)N(R^(B))₂, —NR^(B)C(O)N(R^(B))N(R^(B))₂, —NR^(B)C(O)OR^(A), —SC(O)R^(A), —C(═NR^(B))R^(A), —C(═NNR^(B))R^(A), —C(═NOR^(A))R^(A), —C(═NR^(B))N(R^(B))₂, —NR^(B)C(═NR^(B))R^(B), —C(═S)R^(A), —C(═S)N(R^(B))₂, —NR^(B)C(═S)R^(A), —S(O)R^(A), —OS(O)₂R^(A), —SO₂R^(A), —NR^(B)SO₂R^(A), and —SO₂N(R^(B))₂; each R^(A) is independently selected from the group consisting of hydrogen, optionally substituted aliphatic, optionally substituted carbocyclyl, optionally substituted heterocyclyl, optionally substituted aryl, and optionally substituted heteroaryl; each R^(B) is independently selected from the group consisting of hydrogen, optionally substituted aliphatic, optionally substituted carbocyclyl, optionally substituted heterocyclyl, optionally substituted aryl, and optionally substituted heteroaryl, or two R^(B) groups are taken together with their intervening atoms to form an optionally substituted heterocyclic ring; R⁵, R⁶, R⁷, and R⁸ are independently hydrogen, halo, or optionally substituted aliphatic; each R^(x) is independently selected from the group consisting of halo, —CN, optionally substituted aliphatic, and —N(R″)₂; each R″ is independently hydrogen or optionally substituted aliphatic, or two R″ are taken together with their intervening atoms to form a heterocyclic ring; and n is 0, 1, 2, 3, 4, 5, 6, 7, 8, 9, or 10, as valency permits; provided the compound is not: 